40024203021 has 12 divisors (see below), whose sum is σ = 63068441280. Its totient is φ = 24257092680.

The previous prime is 40024202947. The next prime is 40024203047. The reversal of 40024203021 is 12030242004.

40024203021 is a `hidden beast` number, since 400 + 242 + 0 + 3 + 0 + 21 = 666.

It is not a de Polignac number, because 40024203021 - 2¹⁷ = 40024071949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40024202985 and 40024203003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40024203061) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 202142341 + ... + 202142538.

It is an arithmetic number, because the mean of its divisors is an integer number (5255703440).

Almost surely, 2^40024203021 is an apocalyptic number.

It is an amenable number.

40024203021 is a deficient number, since it is larger than the sum of its proper divisors (23044238259).

40024203021 is a wasteful number, since it uses less digits than its factorization.

40024203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404284896 (or 404284893 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 40024203021 its reverse (12030242004), we get a palindrome (52054445025).

The spelling of 40024203021 in words is "forty billion, twenty-four million, two hundred three thousand, twenty-one".