161579842 has 8 divisors (see below), whose sum is σ = 242459532. Its totient is φ = 80760000.

The previous prime is 161579837. The next prime is 161579861. The reversal of 161579842 is 248975161.

161579842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 139216401 + 22363441 = 11799^2 + 4729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161579842² = 52216090681489928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7459 + ... + 19462.

Almost surely, 2^161579842 is an apocalyptic number.

161579842 is a deficient number, since it is larger than the sum of its proper divisors (80879690).

161579842 is a wasteful number, since it uses less digits than its factorization.

161579842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29924.

The product of its digits is 120960, while the sum is 43.

The square root of 161579842 is about 12711.4059804571. The cubic root of 161579842 is about 544.6644872629.

The spelling of 161579842 in words is "one hundred sixty-one million, five hundred seventy-nine thousand, eight hundred forty-two".