42398637 has 16 divisors (see below), whose sum is σ = 59142528. Its totient is φ = 26966720.

The previous prime is 42398627. The next prime is 42398651. The reversal of 42398637 is 73689324.

It is a cyclic number.

It is not a de Polignac number, because 42398637 - 2⁷ = 42398509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42398627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44587 + ... + 45527.

It is an arithmetic number, because the mean of its divisors is an integer number (3696408).

Almost surely, 2^42398637 is an apocalyptic number.

It is an amenable number.

42398637 is a deficient number, since it is larger than the sum of its proper divisors (16743891).

42398637 is a wasteful number, since it uses less digits than its factorization.

42398637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its digits is 217728, while the sum is 42.

The square root of 42398637 is about 6511.4235770682. The cubic root of 42398637 is about 348.6989437212.

The spelling of 42398637 in words is "forty-two million, three hundred ninety-eight thousand, six hundred thirty-seven".