642297882 has 16 divisors (see below), whose sum is σ = 1315927872. Its totient is φ = 208877280.

The previous prime is 642297881. The next prime is 642297919. The reversal of 642297882 is 288792246.

It is a super-3 number, since 3×642297882³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (642297881) by changing a digit.

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, 1305238 + ... + 1305729.

It is an arithmetic number, because the mean of its divisors is an integer number (82245492).

Almost surely, 2^642297882 is an apocalyptic number.

642297882 is an abundant number, since it is smaller than the sum of its proper divisors (673629990).

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

642297882 is a wasteful number, since it uses less digits than its factorization.

642297882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611013.

The product of its digits is 774144, while the sum is 48.

The square root of 642297882 is about 25343.5964693253. The cubic root of 642297882 is about 862.8040267410.

The spelling of 642297882 in words is "six hundred forty-two million, two hundred ninety-seven thousand, eight hundred eighty-two".