642513192 has 32 divisors (see below), whose sum is σ = 1658100480. Its totient is φ = 207262080.

The previous prime is 642513169. The next prime is 642513203. The reversal of 642513192 is 291315246.

642513192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431053 + ... + 432540.

It is an arithmetic number, because the mean of its divisors is an integer number (51815640).

Almost surely, 2^642513192 is an apocalyptic number.

642513192 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

642513192 is an abundant number, since it is smaller than the sum of its proper divisors (1015587288).

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

642513192 is a wasteful number, since it uses less digits than its factorization.

642513192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863633 (or 863629 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 642513192 is about 25347.8439319797. The cubic root of 642513192 is about 862.9004252015.

The spelling of 642513192 in words is "six hundred forty-two million, five hundred thirteen thousand, one hundred ninety-two".