40420304424 has 40 divisors (see below), whose sum is σ = 113214280410. Its totient is φ = 13473434592.

The previous prime is 40420304411. The next prime is 40420304447. The reversal of 40420304424 is 42440302404.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24248095524 + 16172208900 = 155718^2 + 127170^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31187859 + ... + 31189154.

Almost surely, 2^40420304424 is an apocalyptic number.

It is an amenable number.

40420304424 is an abundant number, since it is smaller than the sum of its proper divisors (72793975986).

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

40420304424 is a wasteful number, since it uses less digits than its factorization.

40420304424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62377031 (or 62377018 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 40420304424 its reverse (42440302404), we get a palindrome (82860606828).

The spelling of 40420304424 in words is "forty billion, four hundred twenty million, three hundred four thousand, four hundred twenty-four".