40157142123 has 16 divisors (see below), whose sum is σ = 63852350976. Its totient is φ = 21949245120.

The previous prime is 40157142089. The next prime is 40157142133. The reversal of 40157142123 is 32124175104.

It is not a de Polignac number, because 40157142123 - 2⁸ = 40157141867 is a prime.

It is a super-2 number, since 2×40157142123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40157142133) 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, 41570058 + ... + 41571023.

It is an arithmetic number, because the mean of its divisors is an integer number (3990771936).

Almost surely, 2^40157142123 is an apocalyptic number.

40157142123 is a deficient number, since it is larger than the sum of its proper divisors (23695208853).

40157142123 is a wasteful number, since it uses less digits than its factorization.

40157142123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83141114.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 40157142123 in words is "forty billion, one hundred fifty-seven million, one hundred forty-two thousand, one hundred twenty-three".