133320431442 has 64 divisors (see below), whose sum is σ = 294679756800. Its totient is φ = 39872926080.

The previous prime is 133320431441. The next prime is 133320431459. The reversal of 133320431442 is 244134023331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133320431441) 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 31 ways as a sum of consecutive naturals, for example, 24654303 + ... + 24659709.

It is an arithmetic number, because the mean of its divisors is an integer number (4604371200).

Almost surely, 2^133320431442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133320431442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147339878400).

133320431442 is an abundant number, since it is smaller than the sum of its proper divisors (161359325358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133320431442 is a wasteful number, since it uses less digits than its factorization.

133320431442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10231.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 133320431442 its reverse (244134023331), we get a palindrome (377454454773).

The spelling of 133320431442 in words is "one hundred thirty-three billion, three hundred twenty million, four hundred thirty-one thousand, four hundred forty-two".