133121072 has 20 divisors (see below), whose sum is σ = 294768336. Its totient is φ = 57051840.

The previous prime is 133121063. The next prime is 133121111. The reversal of 133121072 is 270121331.

It is a super-3 number, since 3×133121072³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594179 + ... + 594402.

Almost surely, 2^133121072 is an apocalyptic number.

It is an amenable number.

133121072 is an abundant number, since it is smaller than the sum of its proper divisors (161647264).

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

133121072 is a wasteful number, since it uses less digits than its factorization.

133121072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188596 (or 1188590 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 133121072 is about 11537.8105375327. The cubic root of 133121072 is about 510.6017145070.

The spelling of 133121072 in words is "one hundred thirty-three million, one hundred twenty-one thousand, seventy-two".