20412401 has 4 divisors (see below), whose sum is σ = 20887152. Its totient is φ = 19937652.

The previous prime is 20412397. The next prime is 20412409. The reversal of 20412401 is 10421402.

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 a cyclic number.

It is not a de Polignac number, because 20412401 - 2² = 20412397 is a prime.

It is a super-2 number, since 2×20412401² = 833332229169602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237311 + ... + 237396.

It is an arithmetic number, because the mean of its divisors is an integer number (5221788).

Almost surely, 2^20412401 is an apocalyptic number.

It is an amenable number.

20412401 is a deficient number, since it is larger than the sum of its proper divisors (474751).

20412401 is an equidigital number, since it uses as much as digits as its factorization.

20412401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474750.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20412401 is about 4518.0085214616. The cubic root of 20412401 is about 273.2947970987.

Adding to 20412401 its reverse (10421402), we get a palindrome (30833803).

Subtracting from 20412401 its reverse (10421402), we obtain a palindrome (9990999).

The spelling of 20412401 in words is "twenty million, four hundred twelve thousand, four hundred one".