42518774 has 4 divisors (see below), whose sum is σ = 63778164. Its totient is φ = 21259386.

The previous prime is 42518767. The next prime is 42518797. The reversal of 42518774 is 47781524.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×42518774² = 3615692284926152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10629692 + ... + 10629695.

It is an arithmetic number, because the mean of its divisors is an integer number (15944541).

Almost surely, 2^42518774 is an apocalyptic number.

42518774 is a deficient number, since it is larger than the sum of its proper divisors (21259390).

42518774 is a wasteful number, since it uses less digits than its factorization.

42518774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21259389.

The product of its digits is 62720, while the sum is 38.

The square root of 42518774 is about 6520.6421462920. The cubic root of 42518774 is about 349.0279805592.

The spelling of 42518774 in words is "forty-two million, five hundred eighteen thousand, seven hundred seventy-four".