133021442 has 8 divisors (see below), whose sum is σ = 200162556. Its totient is φ = 66300592.

The previous prime is 133021439. The next prime is 133021457. The reversal of 133021442 is 244120331.

It can be written as a sum of positive squares in 2 ways, for example, as 131583841 + 1437601 = 11471^2 + 1199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104273 + ... + 105540.

Almost surely, 2^133021442 is an apocalyptic number.

133021442 is a deficient number, since it is larger than the sum of its proper divisors (67141114).

133021442 is a wasteful number, since it uses less digits than its factorization.

133021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210132.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 133021442 is about 11533.4921858039. The cubic root of 133021442 is about 510.4743018084.

Adding to 133021442 its reverse (244120331), we get a palindrome (377141773).

The spelling of 133021442 in words is "one hundred thirty-three million, twenty-one thousand, four hundred forty-two".