642492294 has 16 divisors (see below), whose sum is σ = 1291714560. Its totient is φ = 213042440.

The previous prime is 642492289. The next prime is 642492299. The reversal of 642492294 is 492294246.

642492294 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 (642492289) and next prime (642492299).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642492299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279174 + ... + 281465.

It is an arithmetic number, because the mean of its divisors is an integer number (80732160).

Almost surely, 2^642492294 is an apocalyptic number.

642492294 is an abundant number, since it is smaller than the sum of its proper divisors (649222266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642492294 is a wasteful number, since it uses less digits than its factorization.

642492294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560835.

The product of its digits is 248832, while the sum is 42.

The square root of 642492294 is about 25347.4317042181. The cubic root of 642492294 is about 862.8910697056.

The spelling of 642492294 in words is "six hundred forty-two million, four hundred ninety-two thousand, two hundred ninety-four".