40001242472 has 16 divisors (see below), whose sum is σ = 76417468740. Its totient is φ = 19623250816.

The previous prime is 40001242433. The next prime is 40001242493. The reversal of 40001242472 is 27424210004.

It can be written as a sum of positive squares in 2 ways, for example, as 38980184356 + 1021058116 = 197434^2 + 31954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47170853 + ... + 47171700.

Almost surely, 2^40001242472 is an apocalyptic number.

It is an amenable number.

40001242472 is a deficient number, since it is larger than the sum of its proper divisors (36416226268).

40001242472 is a wasteful number, since it uses less digits than its factorization.

40001242472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94342612 (or 94342608 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

Adding to 40001242472 its reverse (27424210004), we get a palindrome (67425452476).

The spelling of 40001242472 in words is "forty billion, one million, two hundred forty-two thousand, four hundred seventy-two".