40315142021 has 32 divisors (see below), whose sum is σ = 52595682048. Its totient is φ = 29988541440.

The previous prime is 40315142009. The next prime is 40315142041. The reversal of 40315142021 is 12024151304.

It is not a de Polignac number, because 40315142021 - 2¹⁰ = 40315140997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40315142041) 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 31 ways as a sum of consecutive naturals, for example, 17501 + ... + 284493.

It is an arithmetic number, because the mean of its divisors is an integer number (1643615064).

Almost surely, 2^40315142021 is an apocalyptic number.

It is an amenable number.

40315142021 is a deficient number, since it is larger than the sum of its proper divisors (12280540027).

40315142021 is a wasteful number, since it uses less digits than its factorization.

40315142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267101.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 40315142021 its reverse (12024151304), we get a palindrome (52339293325).

The spelling of 40315142021 in words is "forty billion, three hundred fifteen million, one hundred forty-two thousand, twenty-one".