42925637 has 4 divisors (see below), whose sum is σ = 42938796. Its totient is φ = 42912480.

The previous prime is 42925633. The next prime is 42925643. The reversal of 42925637 is 73652924.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19412836 + 23512801 = 4406^2 + 4849^2 .

It is a cyclic number.

It is not a de Polignac number, because 42925637 - 2² = 42925633 is a prime.

It is a super-2 number, since 2×42925637² = 3685220623711538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42925637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42925633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393 + ... + 9569.

It is an arithmetic number, because the mean of its divisors is an integer number (10734699).

Almost surely, 2^42925637 is an apocalyptic number.

It is an amenable number.

42925637 is a deficient number, since it is larger than the sum of its proper divisors (13159).

42925637 is an equidigital number, since it uses as much as digits as its factorization.

42925637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13158.

The product of its digits is 90720, while the sum is 38.

The square root of 42925637 is about 6551.7659451479. The cubic root of 42925637 is about 350.1377335465.

The spelling of 42925637 in words is "forty-two million, nine hundred twenty-five thousand, six hundred thirty-seven".