642065030 has 16 divisors (see below), whose sum is σ = 1158741504. Its totient is φ = 256153920.

The previous prime is 642064991. The next prime is 642065059. The reversal of 642065030 is 30560246.

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 in 7 ways as a sum of consecutive naturals, for example, 79991 + ... + 87650.

It is an arithmetic number, because the mean of its divisors is an integer number (72421344).

Almost surely, 2^642065030 is an apocalyptic number.

642065030 is a deficient number, since it is larger than the sum of its proper divisors (516676474).

642065030 is a wasteful number, since it uses less digits than its factorization.

642065030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168031.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 642065030 is about 25339.0021508346. The cubic root of 642065030 is about 862.6997501367.

The spelling of 642065030 in words is "six hundred forty-two million, sixty-five thousand, thirty".