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130421420 = 2256521071
BaseRepresentation
bin1111100011000…
…01001010101100
3100002102002112222
413301201022230
5231341441140
620535214512
73142364243
oct761411254
9302362488
10130421420
116768a5a8
1237817438
132103554c
141346d95a
15b6b35b5
hex7c612ac

130421420 has 12 divisors (see below), whose sum is σ = 273885024. Its totient is φ = 52168560.

The previous prime is 130421419. The next prime is 130421429. The reversal of 130421420 is 24124031.

It is not an unprimeable number, because it can be changed into a prime (130421429) 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 3 ways as a sum of consecutive naturals, for example, 3260516 + ... + 3260555.

It is an arithmetic number, because the mean of its divisors is an integer number (22823752).

Almost surely, 2130421420 is an apocalyptic number.

130421420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130421420 is an abundant number, since it is smaller than the sum of its proper divisors (143463604).

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

130421420 is a wasteful number, since it uses less digits than its factorization.

130421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521080 (or 6521078 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 130421420 is about 11420.2197877274. The cubic root of 130421420 is about 507.1265033220.

Adding to 130421420 its reverse (24124031), we get a palindrome (154545451).

The spelling of 130421420 in words is "one hundred thirty million, four hundred twenty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 6521071 13042142 26084284 32605355 65210710 130421420