133404242 has 8 divisors (see below), whose sum is σ = 204987132. Its totient is φ = 65075200.

The previous prime is 133404221. The next prime is 133404247. The reversal of 133404242 is 242404331.

It can be written as a sum of positive squares in 2 ways, for example, as 128346241 + 5058001 = 11329^2 + 2249^2 .

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

It is not an unprimeable number, because it can be changed into a prime (133404247) 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, 813359 + ... + 813522.

Almost surely, 2^133404242 is an apocalyptic number.

133404242 is a deficient number, since it is larger than the sum of its proper divisors (71582890).

133404242 is a wasteful number, since it uses less digits than its factorization.

133404242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626924.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 133404242 is about 11550.0754110092. The cubic root of 133404242 is about 510.9635021796.

Adding to 133404242 its reverse (242404331), we get a palindrome (375808573).

The spelling of 133404242 in words is "one hundred thirty-three million, four hundred four thousand, two hundred forty-two".