161652842 has 16 divisors (see below), whose sum is σ = 261805992. Its totient is φ = 74416320.

The previous prime is 161652833. The next prime is 161652851. The reversal of 161652842 is 248256161.

It is an interprime number because it is at equal distance from previous prime (161652833) and next prime (161652851).

It can be written as a sum of positive squares in 4 ways, for example, as 157728481 + 3924361 = 12559^2 + 1981^2 .

It is a super-2 number, since 2×161652842² = 52263282653353928, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2492 + ... + 18152.

Almost surely, 2^161652842 is an apocalyptic number.

161652842 is a deficient number, since it is larger than the sum of its proper divisors (100153150).

161652842 is a wasteful number, since it uses less digits than its factorization.

161652842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16073.

The product of its digits is 23040, while the sum is 35.

The square root of 161652842 is about 12714.2770930950. The cubic root of 161652842 is about 544.7464993934.

The spelling of 161652842 in words is "one hundred sixty-one million, six hundred fifty-two thousand, eight hundred forty-two".