161210142 has 16 divisors (see below), whose sum is σ = 358244880. Its totient is φ = 53736696.

The previous prime is 161210113. The next prime is 161210143. The reversal of 161210142 is 241012161.

161210142 is a `hidden beast` number, since 1 + 612 + 10 + 1 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161210143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492633 + ... + 1492740.

It is an arithmetic number, because the mean of its divisors is an integer number (22390305).

Almost surely, 2^161210142 is an apocalyptic number.

161210142 is an abundant number, since it is smaller than the sum of its proper divisors (197034738).

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

161210142 is a wasteful number, since it uses less digits than its factorization.

161210142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985384 (or 2985378 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 161210142 is about 12696.8555949889. The cubic root of 161210142 is about 544.2487666123.

The spelling of 161210142 in words is "one hundred sixty-one million, two hundred ten thousand, one hundred forty-two".