642892523 has 8 divisors (see below), whose sum is σ = 791252448. Its totient is φ = 508662144.

The previous prime is 642892507. The next prime is 642892543. The reversal of 642892523 is 325298246.

642892523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642892523 - 2⁴ = 642892507 is a prime.

It is a super-2 number, since 2×642892523² = 826621592258611058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642892543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3532286 + ... + 3532467.

It is an arithmetic number, because the mean of its divisors is an integer number (98906556).

Almost surely, 2^642892523 is an apocalyptic number.

642892523 is a deficient number, since it is larger than the sum of its proper divisors (148359925).

642892523 is a wasteful number, since it uses less digits than its factorization.

642892523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7064773.

The product of its digits is 207360, while the sum is 41.

The square root of 642892523 is about 25355.3253380823. The cubic root of 642892523 is about 863.0702066630.

The spelling of 642892523 in words is "six hundred forty-two million, eight hundred ninety-two thousand, five hundred twenty-three".