42360731 has 4 divisors (see below), whose sum is σ = 48412272. Its totient is φ = 36309192.

The previous prime is 42360691. The next prime is 42360737. The reversal of 42360731 is 13706324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42360731 is a prime.

It is a super-2 number, since 2×42360731² = 3588863061708722, 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 42360731.

It is not an unprimeable number, because it can be changed into a prime (42360737) 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, 3025760 + ... + 3025773.

It is an arithmetic number, because the mean of its divisors is an integer number (12103068).

Almost surely, 2^42360731 is an apocalyptic number.

42360731 is a deficient number, since it is larger than the sum of its proper divisors (6051541).

42360731 is an equidigital number, since it uses as much as digits as its factorization.

42360731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051540.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 42360731 is about 6508.5121955790. The cubic root of 42360731 is about 348.5949960150.

The spelling of 42360731 in words is "forty-two million, three hundred sixty thousand, seven hundred thirty-one".