42744432 has 40 divisors (see below), whose sum is σ = 112778496. Its totient is φ = 13944256.

The previous prime is 42744431. The next prime is 42744439. The reversal of 42744432 is 23444724.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42744432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42744431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7218 + ... + 11729.

Almost surely, 2^42744432 is an apocalyptic number.

It is an amenable number.

42744432 is an abundant number, since it is smaller than the sum of its proper divisors (70034064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42744432 is a wasteful number, since it uses less digits than its factorization.

42744432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19005 (or 18999 counting only the distinct ones).

The product of its digits is 21504, while the sum is 30.

The square root of 42744432 is about 6537.9226058435. The cubic root of 42744432 is about 349.6443516597.

The spelling of 42744432 in words is "forty-two million, seven hundred forty-four thousand, four hundred thirty-two".