40021402023 has 40 divisors (see below), whose sum is σ = 63382988592. Its totient is φ = 25079272704.

The previous prime is 40021401983. The next prime is 40021402033. The reversal of 40021402023 is 32020412004.

40021402023 is a `hidden beast` number, since 400 + 21 + 40 + 202 + 3 = 666.

It is not a de Polignac number, because 40021402023 - 2⁸ = 40021401767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40021401987 and 40021402005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021402033) 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 39 ways as a sum of consecutive naturals, for example, 1079236 + ... + 1115702.

Almost surely, 2^40021402023 is an apocalyptic number.

40021402023 is a deficient number, since it is larger than the sum of its proper divisors (23361586569).

40021402023 is a wasteful number, since it uses less digits than its factorization.

40021402023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37293 (or 37284 counting only the distinct ones).

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

Adding to 40021402023 its reverse (32020412004), we get a palindrome (72041814027).

The spelling of 40021402023 in words is "forty billion, twenty-one million, four hundred two thousand, twenty-three".