40142805639 has 16 divisors (see below), whose sum is σ = 53809569792. Its totient is φ = 26619028128.

The previous prime is 40142805623. The next prime is 40142805679. The reversal of 40142805639 is 93650824104.

It is not a de Polignac number, because 40142805639 - 2⁴ = 40142805623 is a prime.

It is a super-2 number, since 2×40142805639² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40142805639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142805679) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3246102 + ... + 3258444.

It is an arithmetic number, because the mean of its divisors is an integer number (3363098112).

Almost surely, 2^40142805639 is an apocalyptic number.

40142805639 is a deficient number, since it is larger than the sum of its proper divisors (13666764153).

40142805639 is a wasteful number, since it uses less digits than its factorization.

40142805639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18046.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 40142805639 in words is "forty billion, one hundred forty-two million, eight hundred five thousand, six hundred thirty-nine".