133442042 has 8 divisors (see below), whose sum is σ = 206620032. Its totient is φ = 64568700.

The previous prime is 133442041. The next prime is 133442047. The reversal of 133442042 is 240244331.

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

It is a junction number, because it is equal to n+sod(n) for n = 133441999 and 133442017.

It is not an unprimeable number, because it can be changed into a prime (133442041) by changing a digit.

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, 1076084 + ... + 1076207.

It is an arithmetic number, because the mean of its divisors is an integer number (25827504).

Almost surely, 2^133442042 is an apocalyptic number.

133442042 is a deficient number, since it is larger than the sum of its proper divisors (73177990).

133442042 is a wasteful number, since it uses less digits than its factorization.

133442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152324.

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

The square root of 133442042 is about 11551.7116480632. The cubic root of 133442042 is about 511.0117580075.

Adding to 133442042 its reverse (240244331), we get a palindrome (373686373).

The spelling of 133442042 in words is "one hundred thirty-three million, four hundred forty-two thousand, forty-two".