161086142 has 24 divisors (see below), whose sum is σ = 291455856. Its totient is φ = 65401344.

The previous prime is 161086139. The next prime is 161086183. The reversal of 161086142 is 241680161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10883 + ... + 20990.

It is an arithmetic number, because the mean of its divisors is an integer number (12143994).

Almost surely, 2^161086142 is an apocalyptic number.

161086142 is a deficient number, since it is larger than the sum of its proper divisors (130369714).

161086142 is a wasteful number, since it uses less digits than its factorization.

161086142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31920 (or 31901 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 161086142 is about 12691.9715568544. The cubic root of 161086142 is about 544.1091886328.

The spelling of 161086142 in words is "one hundred sixty-one million, eighty-six thousand, one hundred forty-two".