133572724042 has 4 divisors (see below), whose sum is σ = 200359086066. Its totient is φ = 66786362020.

The previous prime is 133572724027. The next prime is 133572724133. The reversal of 133572724042 is 240427275331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 127669721481 + 5903002561 = 357309^2 + 76831^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133572723986 and 133572724004.

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 as a sum of consecutive naturals, namely, 33393181009 + ... + 33393181012.

Almost surely, 2^133572724042 is an apocalyptic number.

133572724042 is a deficient number, since it is larger than the sum of its proper divisors (66786362024).

133572724042 is an equidigital number, since it uses as much as digits as its factorization.

133572724042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66786362023.

The product of its (nonzero) digits is 282240, while the sum is 40.

Adding to 133572724042 its reverse (240427275331), we get a palindrome (373999999373).

The spelling of 133572724042 in words is "one hundred thirty-three billion, five hundred seventy-two million, seven hundred twenty-four thousand, forty-two".