133410021 has 8 divisors (see below), whose sum is σ = 179879040. Its totient is φ = 87940512.

The previous prime is 133409993. The next prime is 133410031. The reversal of 133410021 is 120014331.

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

It is not a de Polignac number, because 133410021 - 2¹⁷ = 133278949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133410031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249565 + ... + 250098.

It is an arithmetic number, because the mean of its divisors is an integer number (22484880).

Almost surely, 2^133410021 is an apocalyptic number.

It is an amenable number.

133410021 is a deficient number, since it is larger than the sum of its proper divisors (46469019).

133410021 is an equidigital number, since it uses as much as digits as its factorization.

133410021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499755.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 133410021 is about 11550.3255798267. The cubic root of 133410021 is about 510.9708802945.

Adding to 133410021 its reverse (120014331), we get a palindrome (253424352).

The spelling of 133410021 in words is "one hundred thirty-three million, four hundred ten thousand, twenty-one".