161162123 has 4 divisors (see below), whose sum is σ = 169644360. Its totient is φ = 152679888.

The previous prime is 161162101. The next prime is 161162147. The reversal of 161162123 is 321261161.

161162123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321261161 = 13 ⋅24712397.

It is a cyclic number.

It is not a de Polignac number, because 161162123 - 2¹² = 161158027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161162153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4241090 + ... + 4241127.

It is an arithmetic number, because the mean of its divisors is an integer number (42411090).

Almost surely, 2^161162123 is an apocalyptic number.

161162123 is a deficient number, since it is larger than the sum of its proper divisors (8482237).

161162123 is an equidigital number, since it uses as much as digits as its factorization.

161162123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482236.

The product of its digits is 432, while the sum is 23.

The square root of 161162123 is about 12694.9644741527. The cubic root of 161162123 is about 544.1947235344.

The spelling of 161162123 in words is "one hundred sixty-one million, one hundred sixty-two thousand, one hundred twenty-three".