642524102 has 64 divisors (see below), whose sum is σ = 1139927040. Its totient is φ = 268531200.

The previous prime is 642524089. The next prime is 642524119. The reversal of 642524102 is 201425246.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2881163 + ... + 2881385.

It is an arithmetic number, because the mean of its divisors is an integer number (17811360).

Almost surely, 2^642524102 is an apocalyptic number.

642524102 is a deficient number, since it is larger than the sum of its proper divisors (497402938).

642524102 is a wasteful number, since it uses less digits than its factorization.

642524102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 642524102 is about 25348.0591367465. The cubic root of 642524102 is about 862.9053092467.

Adding to 642524102 its reverse (201425246), we get a palindrome (843949348).

The spelling of 642524102 in words is "six hundred forty-two million, five hundred twenty-four thousand, one hundred two".