133311402442 has 4 divisors (see below), whose sum is σ = 199967103666. Its totient is φ = 66655701220.

The previous prime is 133311402421. The next prime is 133311402443. The reversal of 133311402442 is 244204113331.

It is a happy number.

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., 113664053881 + 19647348561 = 337141^2 + 140169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133311402442.

It is not an unprimeable number, because it can be changed into a prime (133311402443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33327850609 + ... + 33327850612.

Almost surely, 2^133311402442 is an apocalyptic number.

133311402442 is a deficient number, since it is larger than the sum of its proper divisors (66655701224).

133311402442 is an equidigital number, since it uses as much as digits as its factorization.

133311402442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66655701223.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 133311402442 its reverse (244204113331), we get a palindrome (377515515773).

The spelling of 133311402442 in words is "one hundred thirty-three billion, three hundred eleven million, four hundred two thousand, four hundred forty-two".