40042756013 has 8 divisors (see below), whose sum is σ = 44288454168. Its totient is φ = 35963555904.

The previous prime is 40042755997. The next prime is 40042756043. The reversal of 40042756013 is 31065724004.

It can be written as a sum of positive squares in 4 ways, for example, as 293162884 + 39749593129 = 17122^2 + 199373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40042756013 - 2⁴ = 40042755997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042756043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41624006 + ... + 41624967.

It is an arithmetic number, because the mean of its divisors is an integer number (5536056771).

Almost surely, 2^40042756013 is an apocalyptic number.

It is an amenable number.

40042756013 is a deficient number, since it is larger than the sum of its proper divisors (4245698155).

40042756013 is a wasteful number, since it uses less digits than its factorization.

40042756013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83249023.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 40042756013 in words is "forty billion, forty-two million, seven hundred fifty-six thousand, thirteen".