40042513732 has 24 divisors (see below), whose sum is σ = 76211923032. Its totient is φ = 18298176000.

The previous prime is 40042513703. The next prime is 40042513733. The reversal of 40042513732 is 23731524004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13777125376 + 26265388356 = 117376^2 + 162066^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40042513694 and 40042513703.

It is not an unprimeable number, because it can be changed into a prime (40042513733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806869 + ... + 3817372.

It is an arithmetic number, because the mean of its divisors is an integer number (3175496793).

Almost surely, 2^40042513732 is an apocalyptic number.

It is an amenable number.

40042513732 is a deficient number, since it is larger than the sum of its proper divisors (36169409300).

40042513732 is a wasteful number, since it uses less digits than its factorization.

40042513732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624359 (or 7624357 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 40042513732 in words is "forty billion, forty-two million, five hundred thirteen thousand, seven hundred thirty-two".