40024305021 has 16 divisors (see below), whose sum is σ = 55211356800. Its totient is φ = 25760242368.

The previous prime is 40024305007. The next prime is 40024305037. The reversal of 40024305021 is 12050342004.

It is not a de Polignac number, because 40024305021 - 2²⁶ = 39957196157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40024305121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336035 + ... + 1365663.

It is an arithmetic number, because the mean of its divisors is an integer number (3450709800).

Almost surely, 2^40024305021 is an apocalyptic number.

It is an amenable number.

40024305021 is a deficient number, since it is larger than the sum of its proper divisors (15187051779).

40024305021 is a wasteful number, since it uses less digits than its factorization.

40024305021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45188.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 40024305021 its reverse (12050342004), we get a palindrome (52074647025).

The spelling of 40024305021 in words is "forty billion, twenty-four million, three hundred five thousand, twenty-one".