163136042 has 4 divisors (see below), whose sum is σ = 244704066. Its totient is φ = 81568020.

The previous prime is 163135979. The next prime is 163136053. The reversal of 163136042 is 240631361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240631361 = 1039 ⋅231599.

It can be written as a sum of positive squares in only one way, i.e., 150822961 + 12313081 = 12281^2 + 3509^2 .

It is a super-2 number, since 2×163136042² = 53226736398851528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40784009 + ... + 40784012.

Almost surely, 2^163136042 is an apocalyptic number.

163136042 is a deficient number, since it is larger than the sum of its proper divisors (81568024).

163136042 is an equidigital number, since it uses as much as digits as its factorization.

163136042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81568023.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 163136042 is about 12772.4720395075. The cubic root of 163136042 is about 546.4074856224.

It can be divided in two parts, 1631 and 36042, that added together give a palindrome (37673).

The spelling of 163136042 in words is "one hundred sixty-three million, one hundred thirty-six thousand, forty-two".