42752818 has 4 divisors (see below), whose sum is σ = 64129230. Its totient is φ = 21376408.

The previous prime is 42752789. The next prime is 42752851. The reversal of 42752818 is 81825724.

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

It can be written as a sum of positive squares in only one way, i.e., 42732369 + 20449 = 6537^2 + 143^2 .

It is a super-2 number, since 2×42752818² = 3655606893882248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688203 + ... + 10688206.

Almost surely, 2^42752818 is an apocalyptic number.

42752818 is a deficient number, since it is larger than the sum of its proper divisors (21376412).

42752818 is a wasteful number, since it uses less digits than its factorization.

42752818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21376411.

The product of its digits is 35840, while the sum is 37.

The square root of 42752818 is about 6538.5639096058. The cubic root of 42752818 is about 349.6672156576.

The spelling of 42752818 in words is "forty-two million, seven hundred fifty-two thousand, eight hundred eighteen".