133255421 has 8 divisors (see below), whose sum is σ = 145236000. Its totient is φ = 121522032.

The previous prime is 133255411. The next prime is 133255459. The reversal of 133255421 is 124552331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133255421 - 2¹⁴ = 133239037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133255411) 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, 60671 + ... + 62828.

It is an arithmetic number, because the mean of its divisors is an integer number (18154500).

Almost surely, 2^133255421 is an apocalyptic number.

It is an amenable number.

133255421 is a deficient number, since it is larger than the sum of its proper divisors (11980579).

133255421 is a wasteful number, since it uses less digits than its factorization.

133255421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123595.

The product of its digits is 3600, while the sum is 26.

The square root of 133255421 is about 11543.6311878022. The cubic root of 133255421 is about 510.7734272806.

The spelling of 133255421 in words is "one hundred thirty-three million, two hundred fifty-five thousand, four hundred twenty-one".