161410442 has 4 divisors (see below), whose sum is σ = 242115666. Its totient is φ = 80705220.

The previous prime is 161410429. The next prime is 161410451. The reversal of 161410442 is 244014161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 158482921 + 2927521 = 12589^2 + 1711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40352609 + ... + 40352612.

Almost surely, 2^161410442 is an apocalyptic number.

161410442 is a deficient number, since it is larger than the sum of its proper divisors (80705224).

161410442 is an equidigital number, since it uses as much as digits as its factorization.

161410442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80705223.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 161410442 is about 12704.7409261268. The cubic root of 161410442 is about 544.4740789676.

The spelling of 161410442 in words is "one hundred sixty-one million, four hundred ten thousand, four hundred forty-two".