42107998185 has 144 divisors (see below), whose sum is σ = 84165838848. Its totient is φ = 19437200640.

The previous prime is 42107998183. The next prime is 42107998223. The reversal of 42107998185 is 58189970124.

It is a happy number.

It is not a de Polignac number, because 42107998185 - 2¹ = 42107998183 is a prime.

It is a super-2 number, since 2×42107998185² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42107998183) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9466632 + ... + 9471078.

It is an arithmetic number, because the mean of its divisors is an integer number (584484992).

Almost surely, 2^42107998185 is an apocalyptic number.

42107998185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42107998185 is a deficient number, since it is larger than the sum of its proper divisors (42057840663).

42107998185 is a wasteful number, since it uses less digits than its factorization.

42107998185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564 (or 4550 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 42107998185 in words is "forty-two billion, one hundred seven million, nine hundred ninety-eight thousand, one hundred eighty-five".