43440042 has 32 divisors (see below), whose sum is σ = 92574720. Its totient is φ = 13549680.

The previous prime is 43440029. The next prime is 43440073. The reversal of 43440042 is 24004434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7167 + ... + 11757.

It is an arithmetic number, because the mean of its divisors is an integer number (2892960).

Almost surely, 2^43440042 is an apocalyptic number.

43440042 is an abundant number, since it is smaller than the sum of its proper divisors (49134678).

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

43440042 is a wasteful number, since it uses less digits than its factorization.

43440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 43440042 is about 6590.9060075228. The cubic root of 43440042 is about 351.5308239984.

Adding to 43440042 its reverse (24004434), we get a palindrome (67444476).

The spelling of 43440042 in words is "forty-three million, four hundred forty thousand, forty-two".