133901240 has 64 divisors (see below), whose sum is σ = 330860160. Its totient is φ = 48366720.

The previous prime is 133901177. The next prime is 133901279. The reversal of 133901240 is 42109331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70787 + ... + 72653.

It is an arithmetic number, because the mean of its divisors is an integer number (5169690).

Almost surely, 2^133901240 is an apocalyptic number.

133901240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133901240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165430080).

133901240 is an abundant number, since it is smaller than the sum of its proper divisors (196958920).

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

133901240 is a wasteful number, since it uses less digits than its factorization.

133901240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 133901240 is about 11571.5703342286. The cubic root of 133901240 is about 511.5972479655.

The spelling of 133901240 in words is "one hundred thirty-three million, nine hundred one thousand, two hundred forty".