40123302140 has 24 divisors (see below), whose sum is σ = 84478947840. Its totient is φ = 16007413568.

The previous prime is 40123302083. The next prime is 40123302181. The reversal of 40123302140 is 4120332104.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611355 + ... + 2626674.

It is an arithmetic number, because the mean of its divisors is an integer number (3519956160).

Almost surely, 2^40123302140 is an apocalyptic number.

It is an amenable number.

40123302140 is an abundant number, since it is smaller than the sum of its proper divisors (44355645700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40123302140 is a wasteful number, since it uses less digits than its factorization.

40123302140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238421 (or 5238419 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 40123302140 its reverse (4120332104), we get a palindrome (44243634244).

The spelling of 40123302140 in words is "forty billion, one hundred twenty-three million, three hundred two thousand, one hundred forty".