42000023140 has 24 divisors (see below), whose sum is σ = 91241430840. Its totient is φ = 16220698368.

The previous prime is 42000023123. The next prime is 42000023189. The reversal of 42000023140 is 4132000024.

It can be written as a sum of positive squares in 4 ways, for example, as 3071154724 + 38928868416 = 55418^2 + 197304^2 .

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, 36206337 + ... + 36207496.

It is an arithmetic number, because the mean of its divisors is an integer number (3801726285).

Almost surely, 2^42000023140 is an apocalyptic number.

It is an amenable number.

42000023140 is an abundant number, since it is smaller than the sum of its proper divisors (49241407700).

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

42000023140 is a wasteful number, since it uses less digits than its factorization.

42000023140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72413871 (or 72413869 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 42000023140 its reverse (4132000024), we get a palindrome (46132023164).

The spelling of 42000023140 in words is "forty-two billion, twenty-three thousand, one hundred forty".