149745 has 16 divisors (see below), whose sum is σ = 244800. Its totient is φ = 78144.

The previous prime is 149731. The next prime is 149749. The reversal of 149745 is 547941.

It is a happy number.

It is not a de Polignac number, because 149745 - 2⁴ = 149729 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 149745.

It is not an unprimeable number, because it can be changed into a prime (149749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931 + ... + 1079.

It is an arithmetic number, because the mean of its divisors is an integer number (15300).

2¹⁴⁹⁷⁴⁵ is an apocalyptic number.

149745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149745 is a deficient number, since it is larger than the sum of its proper divisors (95055).

149745 is a wasteful number, since it uses less digits than its factorization.

149745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224.

The product of its digits is 5040, while the sum is 30.

The square root of 149745 is about 386.9689910057. The cubic root of 149745 is about 53.1028027220.

The spelling of 149745 in words is "one hundred forty-nine thousand, seven hundred forty-five".