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12013201420 = 2251171769091
BaseRepresentation
bin10110011000000101…
…01110100000001100
31011000012221212021221
423030002232200030
5144100334421140
65304020333124
7603461345563
oct131402564014
934005855257
1012013201420
115105159040
1223b32441a4
131195b0760c
1481d696bda
154a49cc14a
hex2cc0ae80c

12013201420 has 48 divisors (see below), whose sum is σ = 27908810496. Its totient is φ = 4306904000.

The previous prime is 12013201391. The next prime is 12013201427. The reversal of 12013201420 is 2410231021.

It is a junction number, because it is equal to n+sod(n) for n = 12013201394 and 12013201403.

It is not an unprimeable number, because it can be changed into a prime (12013201427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368926 + ... + 400165.

It is an arithmetic number, because the mean of its divisors is an integer number (581433552).

Almost surely, 212013201420 is an apocalyptic number.

12013201420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013201420 is an abundant number, since it is smaller than the sum of its proper divisors (15895609076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12013201420 is a wasteful number, since it uses less digits than its factorization.

12013201420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769182 (or 769180 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12013201420 its reverse (2410231021), we get a palindrome (14423432441).

The spelling of 12013201420 in words is "twelve billion, thirteen million, two hundred one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 71 110 142 220 284 355 710 781 1420 1562 3124 3905 7810 15620 769091 1538182 3076364 3845455 7690910 8460001 15381820 16920002 33840004 42300005 54605461 84600010 109210922 169200020 218421844 273027305 546054610 600660071 1092109220 1201320142 2402640284 3003300355 6006600710 12013201420