133481442 has 16 divisors (see below), whose sum is σ = 267981120. Its totient is φ = 44324112.

The previous prime is 133481419. The next prime is 133481473. The reversal of 133481442 is 244184331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40717 + ... + 43872.

It is an arithmetic number, because the mean of its divisors is an integer number (16748820).

Almost surely, 2^133481442 is an apocalyptic number.

133481442 is an abundant number, since it is smaller than the sum of its proper divisors (134499678).

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

133481442 is a wasteful number, since it uses less digits than its factorization.

133481442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84857.

The product of its digits is 9216, while the sum is 30.

The square root of 133481442 is about 11553.4168971781. The cubic root of 133481442 is about 511.0620467115.

The spelling of 133481442 in words is "one hundred thirty-three million, four hundred eighty-one thousand, four hundred forty-two".