40031021142 has 48 divisors (see below), whose sum is σ = 99187545600. Its totient is φ = 11430152496.

The previous prime is 40031021137. The next prime is 40031021143. The reversal of 40031021142 is 24112013004.

40031021142 is a `hidden beast` number, since 400 + 3 + 10 + 211 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031021143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99109 + ... + 299807.

It is an arithmetic number, because the mean of its divisors is an integer number (2066407200).

Almost surely, 2^40031021142 is an apocalyptic number.

40031021142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40031021142 is an abundant number, since it is smaller than the sum of its proper divisors (59156524458).

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

40031021142 is a wasteful number, since it uses less digits than its factorization.

40031021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202297 (or 202294 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 40031021142 its reverse (24112013004), we get a palindrome (64143034146).

The spelling of 40031021142 in words is "forty billion, thirty-one million, twenty-one thousand, one hundred forty-two".