149720 has 32 divisors (see below), whose sum is σ = 356400. Its totient is φ = 56448.

The previous prime is 149717. The next prime is 149729. The reversal of 149720 is 27941.

It is a nialpdrome in base 8.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662 + ... + 858.

2¹⁴⁹⁷²⁰ is an apocalyptic number.

149720 is a gapful number since it is divisible by the number (10) 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 149720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178200).

149720 is an abundant number, since it is smaller than the sum of its proper divisors (206680).

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

149720 is a wasteful number, since it uses less digits than its factorization.

149720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 149720 is about 386.9366873275. The cubic root of 149720 is about 53.0998473780.

The spelling of 149720 in words is "one hundred forty-nine thousand, seven hundred twenty".