149724 has 18 divisors (see below), whose sum is σ = 378560. Its totient is φ = 49896.

The previous prime is 149717. The next prime is 149729. The reversal of 149724 is 427941.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149729) by changing a digit.

149724 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2044 + ... + 2115.

2¹⁴⁹⁷²⁴ is an apocalyptic number.

It is an amenable number.

149724 is an abundant number, since it is smaller than the sum of its proper divisors (228836).

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

149724 is a wasteful number, since it uses less digits than its factorization.

149724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169 (or 4164 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 149724 is about 386.9418560973. The cubic root of 149724 is about 53.1003202551.

It can be divided in two parts, 1497 and 24, that added together give a square (1521 = 39²).

The spelling of 149724 in words is "one hundred forty-nine thousand, seven hundred twenty-four".