149172912 has 120 divisors (see below), whose sum is σ = 483135744. Its totient is φ = 42083712.

The previous prime is 149172911. The next prime is 149172913. The reversal of 149172912 is 219271941.

It is an interprime number because it is at equal distance from previous prime (149172911) and next prime (149172913).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149172911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82773 + ... + 84555.

Almost surely, 2^149172912 is an apocalyptic number.

149172912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149172912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241567872).

149172912 is an abundant number, since it is smaller than the sum of its proper divisors (333962832).

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

149172912 is a wasteful number, since it uses less digits than its factorization.

149172912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887 (or 1878 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 149172912 is about 12213.6363135636. The cubic root of 149172912 is about 530.3509151085.

The spelling of 149172912 in words is "one hundred forty-nine million, one hundred seventy-two thousand, nine hundred twelve".