133821395 has 8 divisors (see below), whose sum is σ = 160647840. Its totient is φ = 107015680.

The previous prime is 133821367. The next prime is 133821397. The reversal of 133821395 is 593128331.

It is a happy number.

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

It is not a de Polignac number, because 133821395 - 2⁸ = 133821139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133821397) 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, 21875 + ... + 27315.

It is an arithmetic number, because the mean of its divisors is an integer number (20080980).

Almost surely, 2^133821395 is an apocalyptic number.

133821395 is a deficient number, since it is larger than the sum of its proper divisors (26826445).

133821395 is an equidigital number, since it uses as much as digits as its factorization.

133821395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10365.

The product of its digits is 19440, while the sum is 35.

The square root of 133821395 is about 11568.1197694353. The cubic root of 133821395 is about 511.4955396611.

The spelling of 133821395 in words is "one hundred thirty-three million, eight hundred twenty-one thousand, three hundred ninety-five".