133642564 has 36 divisors (see below), whose sum is σ = 258073200. Its totient is φ = 60509680.

The previous prime is 133642513. The next prime is 133642577. The reversal of 133642564 is 465246331.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202467 + ... + 203125.

It is an arithmetic number, because the mean of its divisors is an integer number (7168700).

Almost surely, 2^133642564 is an apocalyptic number.

It is an amenable number.

133642564 is a deficient number, since it is larger than the sum of its proper divisors (124430636).

133642564 is a wasteful number, since it uses less digits than its factorization.

133642564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1091 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 133642564 is about 11560.3877097613. The cubic root of 133642564 is about 511.2675939609.

Adding to 133642564 its reverse (465246331), we get a palindrome (598888895).

The spelling of 133642564 in words is "one hundred thirty-three million, six hundred forty-two thousand, five hundred sixty-four".