149243712 has 56 divisors (see below), whose sum is σ = 404079456. Its totient is φ = 48588288.

The previous prime is 149243701. The next prime is 149243713. The reversal of 149243712 is 217342941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149243713) 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 7 ways as a sum of consecutive naturals, for example, 783 + ... + 17294.

Almost surely, 2^149243712 is an apocalyptic number.

149243712 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 149243712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202039728).

149243712 is an abundant number, since it is smaller than the sum of its proper divisors (254835744).

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

149243712 is a wasteful number, since it uses less digits than its factorization.

149243712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18135 (or 18125 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 149243712 is about 12216.5343694519. The cubic root of 149243712 is about 530.4348063580.

The spelling of 149243712 in words is "one hundred forty-nine million, two hundred forty-three thousand, seven hundred twelve".