149123290 has 16 divisors (see below), whose sum is σ = 268866720. Its totient is φ = 59550480.

The previous prime is 149123279. The next prime is 149123309. The reversal of 149123290 is 92321941.

149123290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5856 + ... + 18235.

It is an arithmetic number, because the mean of its divisors is an integer number (16804170).

Almost surely, 2^149123290 is an apocalyptic number.

149123290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149123290 is a deficient number, since it is larger than the sum of its proper divisors (119743430).

149123290 is a wasteful number, since it uses less digits than its factorization.

149123290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24717.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 149123290 is about 12211.6047266524. The cubic root of 149123290 is about 530.2921019469.

The spelling of 149123290 in words is "one hundred forty-nine million, one hundred twenty-three thousand, two hundred ninety".