42307732 has 12 divisors (see below), whose sum is σ = 74511220. Its totient is φ = 21018816.

The previous prime is 42307721. The next prime is 42307757. The reversal of 42307732 is 23770324.

It can be written as a sum of positive squares in 2 ways, for example, as 3818116 + 38489616 = 1954^2 + 6204^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42307732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33057 + ... + 34312.

Almost surely, 2^42307732 is an apocalyptic number.

It is an amenable number.

42307732 is a deficient number, since it is larger than the sum of its proper divisors (32203488).

42307732 is a wasteful number, since it uses less digits than its factorization.

42307732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67530 (or 67528 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 42307732 is about 6504.4394070512. The cubic root of 42307732 is about 348.4495555241.

The spelling of 42307732 in words is "forty-two million, three hundred seven thousand, seven hundred thirty-two".