42799185 has 80 divisors (see below), whose sum is σ = 90256320. Its totient is φ = 19128960.

The previous prime is 42799171. The next prime is 42799193. The reversal of 42799185 is 58199724.

It is not a de Polignac number, because 42799185 - 2¹¹ = 42797137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42799185.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57546 + ... + 58284.

It is an arithmetic number, because the mean of its divisors is an integer number (1128204).

Almost surely, 2^42799185 is an apocalyptic number.

42799185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42799185 is an abundant number, since it is smaller than the sum of its proper divisors (47457135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42799185 is a wasteful number, since it uses less digits than its factorization.

42799185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 771 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 42799185 is about 6542.1086050294. The cubic root of 42799185 is about 349.7935789624.

The spelling of 42799185 in words is "forty-two million, seven hundred ninety-nine thousand, one hundred eighty-five".