642213315 has 48 divisors (see below), whose sum is σ = 1127093760. Its totient is φ = 338264640.

The previous prime is 642213283. The next prime is 642213347. The reversal of 642213315 is 513312246.

642213315 is a `hidden beast` number, since 642 + 2 + 1 + 3 + 3 + 15 = 666.

642213315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642213283) and next prime (642213347).

It is not a de Polignac number, because 642213315 - 2⁵ = 642213283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2269164 + ... + 2269446.

It is an arithmetic number, because the mean of its divisors is an integer number (23481120).

Almost surely, 2^642213315 is an apocalyptic number.

642213315 is a deficient number, since it is larger than the sum of its proper divisors (484880445).

642213315 is a wasteful number, since it uses less digits than its factorization.

642213315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 741 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 642213315 is about 25341.9280047908. The cubic root of 642213315 is about 862.7661585635.

The spelling of 642213315 in words is "six hundred forty-two million, two hundred thirteen thousand, three hundred fifteen".