149589123 has 4 divisors (see below), whose sum is σ = 199452168. Its totient is φ = 99726080.

The previous prime is 149589059. The next prime is 149589133. The reversal of 149589123 is 321985941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149589123 - 2⁶ = 149589059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149589133) 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, 24931518 + ... + 24931523.

It is an arithmetic number, because the mean of its divisors is an integer number (49863042).

Almost surely, 2^149589123 is an apocalyptic number.

149589123 is a deficient number, since it is larger than the sum of its proper divisors (49863045).

149589123 is an equidigital number, since it uses as much as digits as its factorization.

149589123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49863044.

The product of its digits is 77760, while the sum is 42.

The square root of 149589123 is about 12230.6632281328. The cubic root of 149589123 is about 530.8437054416.

The spelling of 149589123 in words is "one hundred forty-nine million, five hundred eighty-nine thousand, one hundred twenty-three".