149481 has 12 divisors (see below), whose sum is σ = 228852. Its totient is φ = 93696.

The previous prime is 149459. The next prime is 149489. The reversal of 149481 is 184941.

It can be written as a sum of positive squares in 2 ways, for example, as 129600 + 19881 = 360^2 + 141^2 .

It is not a de Polignac number, because 149481 - 2⁶ = 149417 is a prime.

It is a super-2 number, since 2×149481² = 44689138722, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 149481.

It is not an unprimeable number, because it can be changed into a prime (149489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (19071).

2¹⁴⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

149481 is a deficient number, since it is larger than the sum of its proper divisors (79371).

149481 is a wasteful number, since it uses less digits than its factorization.

149481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 997 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 149481 is about 386.6277279244. The cubic root of 149481 is about 53.0715776692.

It can be divided in two parts, 149 and 481, that added together give a triangular number (630 = T₃₅).

The spelling of 149481 in words is "one hundred forty-nine thousand, four hundred eighty-one".