42251236 has 12 divisors (see below), whose sum is σ = 74003328. Its totient is φ = 21107432.

The previous prime is 42251227. The next prime is 42251267. The reversal of 42251236 is 63215224.

It is a self number, because there is not a number n which added to its sum of digits gives 42251236.

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, 1605 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (6166944).

Almost surely, 2^42251236 is an apocalyptic number.

It is an amenable number.

42251236 is a deficient number, since it is larger than the sum of its proper divisors (31752092).

42251236 is a wasteful number, since it uses less digits than its factorization.

42251236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9098 (or 9096 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 42251236 is about 6500.0950762277. The cubic root of 42251236 is about 348.2943847134.

The spelling of 42251236 in words is "forty-two million, two hundred fifty-one thousand, two hundred thirty-six".