133565242 has 16 divisors (see below), whose sum is σ = 208850400. Its totient is φ = 63983920.

The previous prime is 133565233. The next prime is 133565279. The reversal of 133565242 is 242565331.

It is a happy number.

133565242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192 + ... + 16387.

It is an arithmetic number, because the mean of its divisors is an integer number (13053150).

Almost surely, 2^133565242 is an apocalyptic number.

133565242 is a deficient number, since it is larger than the sum of its proper divisors (75285158).

133565242 is a wasteful number, since it uses less digits than its factorization.

133565242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17741.

The product of its digits is 21600, while the sum is 31.

The square root of 133565242 is about 11557.0429608962. The cubic root of 133565242 is about 511.1689730369.

The spelling of 133565242 in words is "one hundred thirty-three million, five hundred sixty-five thousand, two hundred forty-two".