161340142 has 8 divisors (see below), whose sum is σ = 243347832. Its totient is φ = 80224200.

The previous prime is 161340139. The next prime is 161340209. The reversal of 161340142 is 241043161.

161340142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222484 + ... + 223207.

It is an arithmetic number, because the mean of its divisors is an integer number (30418479).

Almost surely, 2^161340142 is an apocalyptic number.

161340142 is a deficient number, since it is larger than the sum of its proper divisors (82007690).

161340142 is a wasteful number, since it uses less digits than its factorization.

161340142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445874.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 161340142 is about 12701.9739410849. The cubic root of 161340142 is about 544.3950215337.

The spelling of 161340142 in words is "one hundred sixty-one million, three hundred forty thousand, one hundred forty-two".