133920219 has 4 divisors (see below), whose sum is σ = 178560296. Its totient is φ = 89280144.

The previous prime is 133920211. The next prime is 133920233. The reversal of 133920219 is 912029331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 133920219 - 2³ = 133920211 is a prime.

It is a super-2 number, since 2×133920219² = 35869250114015922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133920211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22320034 + ... + 22320039.

It is an arithmetic number, because the mean of its divisors is an integer number (44640074).

Almost surely, 2^133920219 is an apocalyptic number.

133920219 is a deficient number, since it is larger than the sum of its proper divisors (44640077).

133920219 is an equidigital number, since it uses as much as digits as its factorization.

133920219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44640076.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 133920219 is about 11572.3903753719. The cubic root of 133920219 is about 511.6214178822.

The spelling of 133920219 in words is "one hundred thirty-three million, nine hundred twenty thousand, two hundred nineteen".