642232146 has 32 divisors (see below), whose sum is σ = 1329596928. Its totient is φ = 206593920.

The previous prime is 642232141. The next prime is 642232147. The reversal of 642232146 is 641232246.

It is not an unprimeable number, because it can be changed into a prime (642232141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64750 + ... + 74006.

It is an arithmetic number, because the mean of its divisors is an integer number (41549904).

Almost surely, 2^642232146 is an apocalyptic number.

642232146 is an abundant number, since it is smaller than the sum of its proper divisors (687364782).

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

642232146 is a wasteful number, since it uses less digits than its factorization.

642232146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9666.

The product of its digits is 13824, while the sum is 30.

The square root of 642232146 is about 25342.2995404916. The cubic root of 642232146 is about 862.7745911670.

The spelling of 642232146 in words is "six hundred forty-two million, two hundred thirty-two thousand, one hundred forty-six".