133123952 has 20 divisors (see below), whose sum is σ = 277768680. Its totient is φ = 61441728.

The previous prime is 133123933. The next prime is 133123961. The reversal of 133123952 is 259321331.

It is a congruent number.

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, 319802 + ... + 320217.

It is an arithmetic number, because the mean of its divisors is an integer number (13888434).

Almost surely, 2^133123952 is an apocalyptic number.

It is an amenable number.

133123952 is an abundant number, since it is smaller than the sum of its proper divisors (144644728).

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

133123952 is a wasteful number, since it uses less digits than its factorization.

133123952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640040 (or 640034 counting only the distinct ones).

The product of its digits is 4860, while the sum is 29.

The square root of 133123952 is about 11537.9353438993. The cubic root of 133123952 is about 510.6053966747.

The spelling of 133123952 in words is "one hundred thirty-three million, one hundred twenty-three thousand, nine hundred fifty-two".