42942884 has 12 divisors (see below), whose sum is σ = 79570764. Its totient is φ = 20208384.

The previous prime is 42942883. The next prime is 42942923. The reversal of 42942884 is 48824924.

It can be written as a sum of positive squares in 2 ways, for example, as 19998784 + 22944100 = 4472^2 + 4790^2 .

It is not an unprimeable number, because it can be changed into a prime (42942883) 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 3 ways as a sum of consecutive naturals, for example, 315689 + ... + 315824.

It is an arithmetic number, because the mean of its divisors is an integer number (6630897).

Almost surely, 2^42942884 is an apocalyptic number.

It is an amenable number.

42942884 is a deficient number, since it is larger than the sum of its proper divisors (36627880).

42942884 is a wasteful number, since it uses less digits than its factorization.

42942884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631534 (or 631532 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 42942884 is about 6553.0820229874. The cubic root of 42942884 is about 350.1846209648.

The spelling of 42942884 in words is "forty-two million, nine hundred forty-two thousand, eight hundred eighty-four".