149147172 has 36 divisors (see below), whose sum is σ = 378692496. Its totient is φ = 49494000.

The previous prime is 149147161. The next prime is 149147183. The reversal of 149147172 is 271741941.

It is an interprime number because it is at equal distance from previous prime (149147161) and next prime (149147183).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954 + ... + 17297.

It is an arithmetic number, because the mean of its divisors is an integer number (10519236).

Almost surely, 2^149147172 is an apocalyptic number.

149147172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149147172 is an abundant number, since it is smaller than the sum of its proper divisors (229545324).

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

149147172 is a wasteful number, since it uses less digits than its factorization.

149147172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18488 (or 18483 counting only the distinct ones).

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

The square root of 149147172 is about 12212.5825278685. The cubic root of 149147172 is about 530.3204090834.

The spelling of 149147172 in words is "one hundred forty-nine million, one hundred forty-seven thousand, one hundred seventy-two".