149421172 has 12 divisors (see below), whose sum is σ = 261575776. Its totient is φ = 74685240.

The previous prime is 149421163. The next prime is 149421191. The reversal of 149421172 is 271124941.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14647 + ... + 22657.

Almost surely, 2^149421172 is an apocalyptic number.

It is an amenable number.

149421172 is a deficient number, since it is larger than the sum of its proper divisors (112154604).

149421172 is a wasteful number, since it uses less digits than its factorization.

149421172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12678 (or 12676 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 149421172 is about 12223.7953189670. The cubic root of 149421172 is about 530.6449630092.

The spelling of 149421172 in words is "one hundred forty-nine million, four hundred twenty-one thousand, one hundred seventy-two".