133942 has 8 divisors (see below), whose sum is σ = 202536. Its totient is φ = 66432.

The previous prime is 133919. The next prime is 133949. The reversal of 133942 is 249331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133949) by changing a digit.

133942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (25317).

2¹³³⁹⁴² is an apocalyptic number.

133942 is a deficient number, since it is larger than the sum of its proper divisors (68594).

133942 is a wasteful number, since it uses less digits than its factorization.

133942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542.

The product of its digits is 648, while the sum is 22.

The square root of 133942 is about 365.9808738172. The cubic root of 133942 is about 51.1649153356.

The spelling of 133942 in words is "one hundred thirty-three thousand, nine hundred forty-two".