120162161 has 16 divisors (see below), whose sum is σ = 142080000. Its totient is φ = 101564064.

The previous prime is 120162121. The next prime is 120162181. The reversal of 120162161 is 161261021.

It is not a de Polignac number, because 120162161 - 2¹⁰ = 120161137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120162101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22640 + ... + 27438.

It is an arithmetic number, because the mean of its divisors is an integer number (8880000).

Almost surely, 2^120162161 is an apocalyptic number.

It is an amenable number.

120162161 is a deficient number, since it is larger than the sum of its proper divisors (21917839).

120162161 is an frugal number, since it uses more digits than its factorization.

120162161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893 (or 4879 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 120162161 is about 10961.8502544050. The cubic root of 120162161 is about 493.4644945366.

The spelling of 120162161 in words is "one hundred twenty million, one hundred sixty-two thousand, one hundred sixty-one".