42332731 has 8 divisors (see below), whose sum is σ = 48833280. Its totient is φ = 35945448.

The previous prime is 42332729. The next prime is 42332749. The reversal of 42332731 is 13723324.

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

It is not a de Polignac number, because 42332731 - 2¹ = 42332729 is a prime.

It is a super-2 number, since 2×42332731² = 3584120227836722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42332696 and 42332705.

It is not an unprimeable number, because it can be changed into a prime (42332831) 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, 27511 + ... + 29008.

It is an arithmetic number, because the mean of its divisors is an integer number (6104160).

Almost surely, 2^42332731 is an apocalyptic number.

42332731 is a deficient number, since it is larger than the sum of its proper divisors (6500549).

42332731 is a wasteful number, since it uses less digits than its factorization.

42332731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56633.

The product of its digits is 3024, while the sum is 25.

The square root of 42332731 is about 6506.3608107759. The cubic root of 42332731 is about 348.5181732044.

The spelling of 42332731 in words is "forty-two million, three hundred thirty-two thousand, seven hundred thirty-one".