42992818 has 16 divisors (see below), whose sum is σ = 71038656. Its totient is φ = 19351440.

The previous prime is 42992809. The next prime is 42992821. The reversal of 42992818 is 81829924.

It is a super-2 number, since 2×42992818² = 3696764799162248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7221 + ... + 11752.

It is an arithmetic number, because the mean of its divisors is an integer number (4439916).

Almost surely, 2^42992818 is an apocalyptic number.

42992818 is a deficient number, since it is larger than the sum of its proper divisors (28045838).

42992818 is a wasteful number, since it uses less digits than its factorization.

42992818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19089.

The product of its digits is 82944, while the sum is 43.

The square root of 42992818 is about 6556.8908790676. The cubic root of 42992818 is about 350.3202999876.

It can be divided in two parts, 4299 and 2818, that added together give a palindrome (7117).

The spelling of 42992818 in words is "forty-two million, nine hundred ninety-two thousand, eight hundred eighteen".