42456208 has 20 divisors (see below), whose sum is σ = 87098220. Its totient is φ = 19979264.

The previous prime is 42456187. The next prime is 42456251. The reversal of 42456208 is 80265424.

It can be written as a sum of positive squares in 2 ways, for example, as 39538944 + 2917264 = 6288^2 + 1708^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42456208.

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 3 ways as a sum of consecutive naturals, for example, 77773 + ... + 78316.

It is an arithmetic number, because the mean of its divisors is an integer number (4354911).

Almost surely, 2^42456208 is an apocalyptic number.

It is an amenable number.

42456208 is an abundant number, since it is smaller than the sum of its proper divisors (44642012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42456208 is a wasteful number, since it uses less digits than its factorization.

42456208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156114 (or 156108 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 42456208 is about 6515.8428464781. The cubic root of 42456208 is about 348.8566993230.

The spelling of 42456208 in words is "forty-two million, four hundred fifty-six thousand, two hundred eight".