149920 has 24 divisors (see below), whose sum is σ = 354564. Its totient is φ = 59904.

The previous prime is 149911. The next prime is 149921. The reversal of 149920 is 29941.

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 17424 = 364^2 + 132^2 .

It is not an unprimeable number, because it can be changed into a prime (149921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309 + ... + 628.

2¹⁴⁹⁹²⁰ is an apocalyptic number.

149920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149920 is an abundant number, since it is smaller than the sum of its proper divisors (204644).

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

149920 is an equidigital number, since it uses as much as digits as its factorization.

149920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 149920 is about 387.1950412906. The cubic root of 149920 is about 53.1234809254.

The spelling of 149920 in words is "one hundred forty-nine thousand, nine hundred twenty".