133321042 has 4 divisors (see below), whose sum is σ = 199981566. Its totient is φ = 66660520.

The previous prime is 133321039. The next prime is 133321057. The reversal of 133321042 is 240123331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240123331 = 7 ⋅34303333.

It can be written as a sum of positive squares in only one way, i.e., 101183481 + 32137561 = 10059^2 + 5669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33330259 + ... + 33330262.

Almost surely, 2^133321042 is an apocalyptic number.

133321042 is a deficient number, since it is larger than the sum of its proper divisors (66660524).

133321042 is an equidigital number, since it uses as much as digits as its factorization.

133321042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66660523.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133321042 is about 11546.4731411804. The cubic root of 133321042 is about 510.8572561722.

Adding to 133321042 its reverse (240123331), we get a palindrome (373444373).

The spelling of 133321042 in words is "one hundred thirty-three million, three hundred twenty-one thousand, forty-two".