40143238140 has 48 divisors (see below), whose sum is σ = 117288073728. Its totient is φ = 10239434304.

The previous prime is 40143238123. The next prime is 40143238151. The reversal of 40143238140 is 4183234104.

It is a super-2 number, since 2×40143238140² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40143238098 and 40143238107.

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, 14543272 + ... + 14546031.

It is an arithmetic number, because the mean of its divisors is an integer number (2443501536).

Almost surely, 2^40143238140 is an apocalyptic number.

It is an amenable number.

40143238140 is an abundant number, since it is smaller than the sum of its proper divisors (77144835588).

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

40143238140 is a wasteful number, since it uses less digits than its factorization.

40143238140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29089338 (or 29089336 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 40143238140 in words is "forty billion, one hundred forty-three million, two hundred thirty-eight thousand, one hundred forty".