133430401 has 8 divisors (see below), whose sum is σ = 144546920. Its totient is φ = 123164496.

The previous prime is 133430389. The next prime is 133430449. The reversal of 133430401 is 104034331.

It can be written as a sum of positive squares in 4 ways, for example, as 47886400 + 85544001 = 6920^2 + 9249^2 .

It is not a de Polignac number, because 133430401 - 2¹¹ = 133428353 is a prime.

It is a super-2 number, since 2×133430401² = 35607343822041602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133430461) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 28170 + ... + 32563.

It is an arithmetic number, because the mean of its divisors is an integer number (18068365).

Almost surely, 2^133430401 is an apocalyptic number.

It is an amenable number.

133430401 is a deficient number, since it is larger than the sum of its proper divisors (11116519).

133430401 is an frugal number, since it uses more digits than its factorization.

133430401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60772 (or 60746 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133430401 is about 11551.2077723500. The cubic root of 133430401 is about 510.9968979710.

Adding to 133430401 its reverse (104034331), we get a palindrome (237464732).

The spelling of 133430401 in words is "one hundred thirty-three million, four hundred thirty thousand, four hundred one".