42911122499 has 32 divisors (see below), whose sum is σ = 50552570880. Its totient is φ = 35667216000.

The previous prime is 42911122493. The next prime is 42911122547. The reversal of 42911122499 is 99422111924.

It is a Cunningham number, because it is equal to 207150²-1.

It is a cyclic number.

It is not a de Polignac number, because 42911122499 - 2¹² = 42911118403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42911122493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12220154 + ... + 12223664.

It is an arithmetic number, because the mean of its divisors is an integer number (1579767840).

Almost surely, 2^42911122499 is an apocalyptic number.

42911122499 is a deficient number, since it is larger than the sum of its proper divisors (7641448381).

42911122499 is a wasteful number, since it uses less digits than its factorization.

42911122499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971.

The product of its digits is 93312, while the sum is 44.

The spelling of 42911122499 in words is "forty-two billion, nine hundred eleven million, one hundred twenty-two thousand, four hundred ninety-nine".