42170923799 has 12 divisors (see below), whose sum is σ = 42900455640. Its totient is φ = 41451612000.

The previous prime is 42170923763. The next prime is 42170923813. The reversal of 42170923799 is 99732907124.

It is not a de Polignac number, because 42170923799 - 2²⁸ = 41902488343 is a prime.

It is a super-2 number, since 2×42170923799² (a number of 22 digits) contains 22 as substring.

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 42170923799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42170923709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1403069 + ... + 1432809.

It is an arithmetic number, because the mean of its divisors is an integer number (3575037970).

Almost surely, 2^42170923799 is an apocalyptic number.

42170923799 is a deficient number, since it is larger than the sum of its proper divisors (729531841).

42170923799 is a wasteful number, since it uses less digits than its factorization.

42170923799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30082 (or 29981 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 42170923799 in words is "forty-two billion, one hundred seventy million, nine hundred twenty-three thousand, seven hundred ninety-nine".