149540 has 12 divisors (see below), whose sum is σ = 314076. Its totient is φ = 59808.

The previous prime is 149533. The next prime is 149543. The reversal of 149540 is 45941.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106276 + 43264 = 326^2 + 208^2 .

It is not an unprimeable number, because it can be changed into a prime (149543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3719 + ... + 3758.

It is an arithmetic number, because the mean of its divisors is an integer number (26173).

2¹⁴⁹⁵⁴⁰ is an apocalyptic number.

149540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149540 is an abundant number, since it is smaller than the sum of its proper divisors (164536).

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

149540 is a wasteful number, since it uses less digits than its factorization.

149540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486 (or 7484 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 149540 is about 386.7040211842. The cubic root of 149540 is about 53.0785591835.

The spelling of 149540 in words is "one hundred forty-nine thousand, five hundred forty".