42398408 has 32 divisors (see below), whose sum is σ = 90651960. Its totient is φ = 18416640.

The previous prime is 42398383. The next prime is 42398413. The reversal of 42398408 is 80489324.

It can be written as a sum of positive squares in 4 ways, for example, as 19377604 + 23020804 = 4402^2 + 4798^2 .

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, 10223 + ... + 13758.

Almost surely, 2^42398408 is an apocalyptic number.

It is an amenable number.

42398408 is an abundant number, since it is smaller than the sum of its proper divisors (48253552).

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

42398408 is a wasteful number, since it uses less digits than its factorization.

42398408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24017 (or 24013 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 42398408 is about 6511.4059925641. The cubic root of 42398408 is about 348.6983159322.

The spelling of 42398408 in words is "forty-two million, three hundred ninety-eight thousand, four hundred eight".