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13240102420 = 225662005121
BaseRepresentation
bin11000101010010101…
…11110111000010100
31021011201120220001201
430111022332320110
5204103431234140
610025445202244
7646050004456
oct142512767024
937151526051
1013240102420
115684768a06
122696100384
13133005a33c
148d85ca2d6
1552757d49a
hex3152bee14

13240102420 has 12 divisors (see below), whose sum is σ = 27804215124. Its totient is φ = 5296040960.

The previous prime is 13240102411. The next prime is 13240102439. The reversal of 13240102420 is 2420104231.

13240102420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4219281936 + 9020820484 = 64956^2 + 94978^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331002541 + ... + 331002580.

It is an arithmetic number, because the mean of its divisors is an integer number (2317017927).

Almost surely, 213240102420 is an apocalyptic number.

13240102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13240102420 is an abundant number, since it is smaller than the sum of its proper divisors (14564112704).

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

13240102420 is a wasteful number, since it uses less digits than its factorization.

13240102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662005130 (or 662005128 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 13240102420 its reverse (2420104231), we get a palindrome (15660206651).

The spelling of 13240102420 in words is "thirteen billion, two hundred forty million, one hundred two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 662005121 1324010242 2648020484 3310025605 6620051210 13240102420