161174442 has 64 divisors (see below), whose sum is σ = 389015424. Its totient is φ = 43856640.

The previous prime is 161174441. The next prime is 161174459. The reversal of 161174442 is 244471161.

161174442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161174442² = 51954401508022728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161174441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29208 + ... + 34284.

It is an arithmetic number, because the mean of its divisors is an integer number (6078366).

Almost surely, 2^161174442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161174442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194507712).

161174442 is an abundant number, since it is smaller than the sum of its proper divisors (227840982).

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

161174442 is a wasteful number, since it uses less digits than its factorization.

161174442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143.

The product of its digits is 5376, while the sum is 30.

The square root of 161174442 is about 12695.4496572591. The cubic root of 161174442 is about 544.2085890008.

The spelling of 161174442 in words is "one hundred sixty-one million, one hundred seventy-four thousand, four hundred forty-two".