165967842 has 16 divisors (see below), whose sum is σ = 332830080. Its totient is φ = 55173552.

The previous prime is 165967819. The next prime is 165967849. The reversal of 165967842 is 248769561.

It is a junction number, because it is equal to n+sod(n) for n = 165967791 and 165967800.

It is not an unprimeable number, because it can be changed into a prime (165967849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34842 + ... + 39317.

It is an arithmetic number, because the mean of its divisors is an integer number (20801880).

Almost surely, 2^165967842 is an apocalyptic number.

165967842 is an abundant number, since it is smaller than the sum of its proper divisors (166862238).

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

165967842 is a wasteful number, since it uses less digits than its factorization.

165967842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74537.

The product of its digits is 725760, while the sum is 48.

The square root of 165967842 is about 12882.8506938488. The cubic root of 165967842 is about 549.5509745578.

The spelling of 165967842 in words is "one hundred sixty-five million, nine hundred sixty-seven thousand, eight hundred forty-two".