133974 has 20 divisors (see below), whose sum is σ = 300564. Its totient is φ = 44604.

The previous prime is 133967. The next prime is 133979. The reversal of 133974 is 479331.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133979) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 252 + ... + 575.

2¹³³⁹⁷⁴ is an apocalyptic number.

133974 is an abundant number, since it is smaller than the sum of its proper divisors (166590).

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

133974 is an equidigital number, since it uses as much as digits as its factorization.

133974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 832 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 133974 is about 366.0245893379. The cubic root of 133974 is about 51.1689896038.

The spelling of 133974 in words is "one hundred thirty-three thousand, nine hundred seventy-four".