133421632 has 28 divisors (see below), whose sum is σ = 265541760. Its totient is φ = 66513536.

The previous prime is 133421621. The next prime is 133421671. The reversal of 133421632 is 236124331.

It is a junction number, because it is equal to n+sod(n) for n = 133421597 and 133421606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20073 + ... + 25879.

Almost surely, 2^133421632 is an apocalyptic number.

It is an amenable number.

133421632 is a deficient number, since it is larger than the sum of its proper divisors (132120128).

133421632 is an equidigital number, since it uses as much as digits as its factorization.

133421632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178 (or 6168 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 133421632 is about 11550.8281954153. The cubic root of 133421632 is about 510.9857035457.

Adding to 133421632 its reverse (236124331), we get a palindrome (369545963).

The spelling of 133421632 in words is "one hundred thirty-three million, four hundred twenty-one thousand, six hundred thirty-two".