42400732 has 12 divisors (see below), whose sum is σ = 80946936. Its totient is φ = 19273040.

The previous prime is 42400717. The next prime is 42400733. The reversal of 42400732 is 23700424.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400733) 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, 481783 + ... + 481870.

It is an arithmetic number, because the mean of its divisors is an integer number (6745578).

Almost surely, 2^42400732 is an apocalyptic number.

It is an amenable number.

42400732 is a deficient number, since it is larger than the sum of its proper divisors (38546204).

42400732 is a wasteful number, since it uses less digits than its factorization.

42400732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963668 (or 963666 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42400732 is about 6511.5844462005. The cubic root of 42400732 is about 348.7046869267.

The spelling of 42400732 in words is "forty-two million, four hundred thousand, seven hundred thirty-two".