42087183769 has 4 divisors (see below), whose sum is σ = 42089334196. Its totient is φ = 42085033344.

The previous prime is 42087183767. The next prime is 42087183791. The reversal of 42087183769 is 96738178024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27200255625 + 14886928144 = 164925^2 + 122012^2 .

It is a cyclic number.

It is not a de Polignac number, because 42087183769 - 2¹ = 42087183767 is a prime.

It is a super-2 number, since 2×42087183769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42087183767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045584 + ... + 1085089.

It is an arithmetic number, because the mean of its divisors is an integer number (10522333549).

Almost surely, 2^42087183769 is an apocalyptic number.

It is an amenable number.

42087183769 is a deficient number, since it is larger than the sum of its proper divisors (2150427).

42087183769 is a wasteful number, since it uses less digits than its factorization.

42087183769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150426.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 42087183769 in words is "forty-two billion, eighty-seven million, one hundred eighty-three thousand, seven hundred sixty-nine".