133112240 has 40 divisors (see below), whose sum is σ = 317042208. Its totient is φ = 51944960.

The previous prime is 133112209. The next prime is 133112249. The reversal of 133112240 is 42211331.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (133112249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17012 + ... + 23571.

Almost surely, 2^133112240 is an apocalyptic number.

133112240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133112240 is an abundant number, since it is smaller than the sum of its proper divisors (183929968).

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

133112240 is a wasteful number, since it uses less digits than its factorization.

133112240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40637 (or 40631 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 133112240 is about 11537.4277895898. The cubic root of 133112240 is about 510.5904221949.

Adding to 133112240 its reverse (42211331), we get a palindrome (175323571).

Subtracting from 133112240 its reverse (42211331), we obtain a palindrome (90900909).

It can be divided in two parts, 13311 and 2240, that added together give a palindrome (15551).

The spelling of 133112240 in words is "one hundred thirty-three million, one hundred twelve thousand, two hundred forty".