40402153142 has 32 divisors (see below), whose sum is σ = 68763921408. Its totient is φ = 17663206176.

The previous prime is 40402153139. The next prime is 40402153157. The reversal of 40402153142 is 24135120404.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266378 + ... + 389565.

It is an arithmetic number, because the mean of its divisors is an integer number (2148872544).

Almost surely, 2^40402153142 is an apocalyptic number.

40402153142 is a deficient number, since it is larger than the sum of its proper divisors (28361768266).

40402153142 is a wasteful number, since it uses less digits than its factorization.

40402153142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656084.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 40402153142 its reverse (24135120404), we get a palindrome (64537273546).

The spelling of 40402153142 in words is "forty billion, four hundred two million, one hundred fifty-three thousand, one hundred forty-two".