133420811 has 8 divisors (see below), whose sum is σ = 141989760. Its totient is φ = 124931968.

The previous prime is 133420789. The next prime is 133420813. The reversal of 133420811 is 118024331.

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 133420811 - 2⁶ = 133420747 is a prime.

It is a super-2 number, since 2×133420811² = 35602225615795442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133420813) 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, 16571 + ... + 23268.

It is an arithmetic number, because the mean of its divisors is an integer number (17748720).

Almost surely, 2^133420811 is an apocalyptic number.

133420811 is a deficient number, since it is larger than the sum of its proper divisors (8568949).

133420811 is a wasteful number, since it uses less digits than its factorization.

133420811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40053.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 133420811 is about 11550.7926567833. The cubic root of 133420811 is about 510.9846554395.

The spelling of 133420811 in words is "one hundred thirty-three million, four hundred twenty thousand, eight hundred eleven".