42249008 has 20 divisors (see below), whose sum is σ = 86166360. Its totient is φ = 20012544.

The previous prime is 42248993. The next prime is 42249017. The reversal of 42249008 is 80094224.

It is a congruent number.

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, 69185 + ... + 69792.

It is an arithmetic number, because the mean of its divisors is an integer number (4308318).

Almost surely, 2^42249008 is an apocalyptic number.

It is an amenable number.

42249008 is an abundant number, since it is smaller than the sum of its proper divisors (43917352).

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

42249008 is a wasteful number, since it uses less digits than its factorization.

42249008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139004 (or 138998 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 42249008 is about 6499.9236918598. The cubic root of 42249008 is about 348.2882624978.

The spelling of 42249008 in words is "forty-two million, two hundred forty-nine thousand, eight".