133112144 has 20 divisors (see below), whose sum is σ = 281351040. Its totient is φ = 60505440.

The previous prime is 133112143. The next prime is 133112191. The reversal of 133112144 is 441211331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133112141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377984 + ... + 378335.

It is an arithmetic number, because the mean of its divisors is an integer number (14067552).

Almost surely, 2^133112144 is an apocalyptic number.

It is an amenable number.

133112144 is an abundant number, since it is smaller than the sum of its proper divisors (148238896).

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

133112144 is a wasteful number, since it uses less digits than its factorization.

133112144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756338 (or 756332 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 133112144 is about 11537.4236292164. The cubic root of 133112144 is about 510.5902994496.

Adding to 133112144 its reverse (441211331), we get a palindrome (574323475).

The spelling of 133112144 in words is "one hundred thirty-three million, one hundred twelve thousand, one hundred forty-four".