149721174 has 12 divisors (see below), whose sum is σ = 324395916. Its totient is φ = 49907052.

The previous prime is 149721163. The next prime is 149721223. The reversal of 149721174 is 471127941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4158904 + ... + 4158939.

It is an arithmetic number, because the mean of its divisors is an integer number (27032993).

Almost surely, 2^149721174 is an apocalyptic number.

149721174 is an abundant number, since it is smaller than the sum of its proper divisors (174674742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149721174 is a wasteful number, since it uses less digits than its factorization.

149721174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8317851 (or 8317848 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 149721174 is about 12236.0603954051. The cubic root of 149721174 is about 530.9998616830. Note that the first 3 decimals are identical.

The spelling of 149721174 in words is "one hundred forty-nine million, seven hundred twenty-one thousand, one hundred seventy-four".