642146524 has 24 divisors (see below), whose sum is σ = 1184698368. Its totient is φ = 304102320.

The previous prime is 642146521. The next prime is 642146543. The reversal of 642146524 is 425641246.

It is a self number, because there is not a number n which added to its sum of digits gives 642146524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642146521) 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 7 ways as a sum of consecutive naturals, for example, 49264 + ... + 60919.

It is an arithmetic number, because the mean of its divisors is an integer number (49362432).

Almost surely, 2^642146524 is an apocalyptic number.

It is an amenable number.

642146524 is a deficient number, since it is larger than the sum of its proper divisors (542551844).

642146524 is a wasteful number, since it uses less digits than its factorization.

642146524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110265 (or 110263 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 642146524 is about 25340.6101741848. The cubic root of 642146524 is about 862.7362479347.

The spelling of 642146524 in words is "six hundred forty-two million, one hundred forty-six thousand, five hundred twenty-four".