133402432 has 14 divisors (see below), whose sum is σ = 264720578. Its totient is φ = 66701184.

The previous prime is 133402361. The next prime is 133402433. The reversal of 133402432 is 234204331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 112021056 + 21381376 = 10584^2 + 4624^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133402433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042143 + ... + 1042270.

Almost surely, 2^133402432 is an apocalyptic number.

It is an amenable number.

133402432 is a deficient number, since it is larger than the sum of its proper divisors (131318146).

133402432 is an equidigital number, since it uses as much as digits as its factorization.

133402432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084425 (or 2084415 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 133402432 is about 11549.9970562767. The cubic root of 133402432 is about 510.9611912883.

Adding to 133402432 its reverse (234204331), we get a palindrome (367606763).

The spelling of 133402432 in words is "one hundred thirty-three million, four hundred two thousand, four hundred thirty-two".