73842420757 has 16 divisors (see below), whose sum is σ = 86479140352. Its totient is φ = 61731920880.

The previous prime is 73842420739. The next prime is 73842420791. The reversal of 73842420757 is 75702424837.

It is a de Polignac number, because none of the positive numbers 2^k-73842420757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73842420757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73842480757) 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, 30478 + ... + 385504.

It is an arithmetic number, because the mean of its divisors is an integer number (5404946272).

Almost surely, 2^73842420757 is an apocalyptic number.

It is an amenable number.

73842420757 is a deficient number, since it is larger than the sum of its proper divisors (12636719595).

73842420757 is a wasteful number, since it uses less digits than its factorization.

73842420757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355768.

The product of its (nonzero) digits is 2634240, while the sum is 49.

The spelling of 73842420757 in words is "seventy-three billion, eight hundred forty-two million, four hundred twenty thousand, seven hundred fifty-seven".