642042304 has 14 divisors (see below), whose sum is σ = 1274052824. Its totient is φ = 321021120.

The previous prime is 642042299. The next prime is 642042311. The reversal of 642042304 is 403240246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015892 + ... + 5016019.

Almost surely, 2^642042304 is an apocalyptic number.

642042304 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

642042304 is a deficient number, since it is larger than the sum of its proper divisors (632010520).

642042304 is a wasteful number, since it uses less digits than its factorization.

642042304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10031923 (or 10031913 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 642042304 is about 25338.5537077395. The cubic root of 642042304 is about 862.6895715489.

The spelling of 642042304 in words is "six hundred forty-two million, forty-two thousand, three hundred four".