642266295 has 32 divisors (see below), whose sum is σ = 1126794240. Its totient is φ = 309805440.

The previous prime is 642266281. The next prime is 642266299. The reversal of 642266295 is 592662246.

It is not a de Polignac number, because 642266295 - 2⁴ = 642266279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642266299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22626 + ... + 42384.

It is an arithmetic number, because the mean of its divisors is an integer number (35212320).

Almost surely, 2^642266295 is an apocalyptic number.

642266295 is a deficient number, since it is larger than the sum of its proper divisors (484527945).

642266295 is a wasteful number, since it uses less digits than its factorization.

642266295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19975.

The product of its digits is 311040, while the sum is 42.

The square root of 642266295 is about 25342.9732864950. The cubic root of 642266295 is about 862.7898828169.

The spelling of 642266295 in words is "six hundred forty-two million, two hundred sixty-six thousand, two hundred ninety-five".