133442107 has 4 divisors (see below), whose sum is σ = 133506576. Its totient is φ = 133377640.

The previous prime is 133442093. The next prime is 133442117. The reversal of 133442107 is 701244331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133442107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133442117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29023 + ... + 33304.

It is an arithmetic number, because the mean of its divisors is an integer number (33376644).

Almost surely, 2^133442107 is an apocalyptic number.

133442107 is a deficient number, since it is larger than the sum of its proper divisors (64469).

133442107 is an equidigital number, since it uses as much as digits as its factorization.

133442107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64468.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 133442107 is about 11551.7144614988. The cubic root of 133442107 is about 511.0118409793.

Adding to 133442107 its reverse (701244331), we get a palindrome (834686438).

It can be divided in two parts, 13344 and 2107, that added together give a palindrome (15451).

The spelling of 133442107 in words is "one hundred thirty-three million, four hundred forty-two thousand, one hundred seven".