42251137 has 8 divisors (see below), whose sum is σ = 44928000. Its totient is φ = 39595584.

The previous prime is 42251119. The next prime is 42251149. The reversal of 42251137 is 73115224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42251137 - 2⁷ = 42251009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42251107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137 + ... + 9262.

It is an arithmetic number, because the mean of its divisors is an integer number (5616000).

Almost surely, 2^42251137 is an apocalyptic number.

It is an amenable number.

42251137 is a deficient number, since it is larger than the sum of its proper divisors (2676863).

42251137 is a wasteful number, since it uses less digits than its factorization.

42251137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655.

The product of its digits is 1680, while the sum is 25.

The square root of 42251137 is about 6500.0874609500. The cubic root of 42251137 is about 348.2941126805.

The spelling of 42251137 in words is "forty-two million, two hundred fifty-one thousand, one hundred thirty-seven".