133244042 has 4 divisors (see below), whose sum is σ = 199866066. Its totient is φ = 66622020.

The previous prime is 133244003. The next prime is 133244047. The reversal of 133244042 is 240442331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240442331 = 829 ⋅290039.

It can be written as a sum of positive squares in only one way, i.e., 94692361 + 38551681 = 9731^2 + 6209^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133243999 and 133244017.

It is not an unprimeable number, because it can be changed into a prime (133244047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33311009 + ... + 33311012.

Almost surely, 2^133244042 is an apocalyptic number.

133244042 is a deficient number, since it is larger than the sum of its proper divisors (66622024).

133244042 is an equidigital number, since it uses as much as digits as its factorization.

133244042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66622023.

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

The square root of 133244042 is about 11543.1383081032. The cubic root of 133244042 is about 510.7588881440.

Adding to 133244042 its reverse (240442331), we get a palindrome (373686373).

The spelling of 133244042 in words is "one hundred thirty-three million, two hundred forty-four thousand, forty-two".