42218872 has 32 divisors (see below), whose sum is σ = 80870400. Its totient is φ = 20658400.

The previous prime is 42218849. The next prime is 42218881. The reversal of 42218872 is 27881224.

It is a congruent number.

It is an unprimeable number.

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, 135597 + ... + 135907.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^42218872 is an apocalyptic number.

It is an amenable number.

42218872 is a deficient number, since it is larger than the sum of its proper divisors (38651528).

42218872 is a wasteful number, since it uses less digits than its factorization.

42218872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 623 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 42218872 is about 6497.6050972647. The cubic root of 42218872 is about 348.2054320587.

The spelling of 42218872 in words is "forty-two million, two hundred eighteen thousand, eight hundred seventy-two".