20412133 has 4 divisors (see below), whose sum is σ = 23328160. Its totient is φ = 17496108.

The previous prime is 20412113. The next prime is 20412149. The reversal of 20412133 is 33121402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20412133 - 2⁵ = 20412101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412113) 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, 1458003 + ... + 1458016.

It is an arithmetic number, because the mean of its divisors is an integer number (5832040).

Almost surely, 2^20412133 is an apocalyptic number.

It is an amenable number.

20412133 is a deficient number, since it is larger than the sum of its proper divisors (2916027).

20412133 is an equidigital number, since it uses as much as digits as its factorization.

20412133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916026.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20412133 is about 4517.9788622790. The cubic root of 20412133 is about 273.2936010394.

Adding to 20412133 its reverse (33121402), we get a palindrome (53533535).

The spelling of 20412133 in words is "twenty million, four hundred twelve thousand, one hundred thirty-three".