40072187240 has 32 divisors (see below), whose sum is σ = 93271473000. Its totient is φ = 15476154624.

The previous prime is 40072187201. The next prime is 40072187273. The reversal of 40072187240 is 4278127004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38942286244 + 1129900996 = 197338^2 + 33614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40072187240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17271335 + ... + 17273654.

Almost surely, 2^40072187240 is an apocalyptic number.

40072187240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40072187240 is an abundant number, since it is smaller than the sum of its proper divisors (53199285760).

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

40072187240 is a wasteful number, since it uses less digits than its factorization.

40072187240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34545029 (or 34545025 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The spelling of 40072187240 in words is "forty billion, seventy-two million, one hundred eighty-seven thousand, two hundred forty".