42620456 has 16 divisors (see below), whose sum is σ = 81224340. Its totient is φ = 20960640.

The previous prime is 42620447. The next prime is 42620467. The reversal of 42620456 is 65402624.

It can be written as a sum of positive squares in 2 ways, for example, as 34035556 + 8584900 = 5834^2 + 2930^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43181 + ... + 44156.

Almost surely, 2^42620456 is an apocalyptic number.

It is an amenable number.

42620456 is a deficient number, since it is larger than the sum of its proper divisors (38603884).

42620456 is a wasteful number, since it uses less digits than its factorization.

42620456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87404 (or 87400 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 42620456 is about 6528.4344218197. The cubic root of 42620456 is about 349.3059880245.

The spelling of 42620456 in words is "forty-two million, six hundred twenty thousand, four hundred fifty-six".