133403104421 has 12 divisors (see below), whose sum is σ = 138296484612. Its totient is φ = 128677471104.

The previous prime is 133403104301. The next prime is 133403104427. The reversal of 133403104421 is 124401304331.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 48847188196 + 84555916225 = 221014^2 + 290785^2 .

It is not a de Polignac number, because 133403104421 - 2³⁰ = 132329362597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133403104427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 791975 + ... + 945531.

It is an arithmetic number, because the mean of its divisors is an integer number (11524707051).

Almost surely, 2^133403104421 is an apocalyptic number.

It is an amenable number.

133403104421 is a deficient number, since it is larger than the sum of its proper divisors (4893380191).

133403104421 is a wasteful number, since it uses less digits than its factorization.

133403104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154648 (or 154619 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 133403104421 its reverse (124401304331), we get a palindrome (257804408752).

The spelling of 133403104421 in words is "one hundred thirty-three billion, four hundred three million, one hundred four thousand, four hundred twenty-one".