133133412442 has 4 divisors (see below), whose sum is σ = 199700118666. Its totient is φ = 66566706220.

The previous prime is 133133412439. The next prime is 133133412449. The reversal of 133133412442 is 244214331331.

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., 124396584601 + 8736827841 = 352699^2 + 93471^2 .

It is not an unprimeable number, because it can be changed into a prime (133133412449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33283353109 + ... + 33283353112.

Almost surely, 2^133133412442 is an apocalyptic number.

133133412442 is a deficient number, since it is larger than the sum of its proper divisors (66566706224).

133133412442 is an equidigital number, since it uses as much as digits as its factorization.

133133412442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66566706223.

The product of its digits is 20736, while the sum is 31.

Adding to 133133412442 its reverse (244214331331), we get a palindrome (377347743773).

The spelling of 133133412442 in words is "one hundred thirty-three billion, one hundred thirty-three million, four hundred twelve thousand, four hundred forty-two".