133412421 has 8 divisors (see below), whose sum is σ = 178201440. Its totient is φ = 88782512.

The previous prime is 133412407. The next prime is 133412449. The reversal of 133412421 is 124214331.

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 133412421 - 2¹⁷ = 133281349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133412921) 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, 37806 + ... + 41183.

It is an arithmetic number, because the mean of its divisors is an integer number (22275180).

Almost surely, 2^133412421 is an apocalyptic number.

It is an amenable number.

133412421 is a deficient number, since it is larger than the sum of its proper divisors (44789019).

133412421 is an equidigital number, since it uses as much as digits as its factorization.

133412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79555.

The product of its digits is 576, while the sum is 21.

The square root of 133412421 is about 11550.4294725348. The cubic root of 133412421 is about 510.9739443390.

Adding to 133412421 its reverse (124214331), we get a palindrome (257626752).

The spelling of 133412421 in words is "one hundred thirty-three million, four hundred twelve thousand, four hundred twenty-one".