411240404021 has 4 divisors (see below), whose sum is σ = 412077961344. Its totient is φ = 410402846700.

The previous prime is 411240403997. The next prime is 411240404027. The reversal of 411240404021 is 120404042114.

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 411240404021 - 2²² = 411236209717 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 (411240404027) 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, 418777925 + ... + 418778906.

It is an arithmetic number, because the mean of its divisors is an integer number (103019490336).

Almost surely, 2^411240404021 is an apocalyptic number.

It is an amenable number.

411240404021 is a deficient number, since it is larger than the sum of its proper divisors (837557323).

411240404021 is an equidigital number, since it uses as much as digits as its factorization.

411240404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837557322.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 411240404021 its reverse (120404042114), we get a palindrome (531644446135).

The spelling of 411240404021 in words is "four hundred eleven billion, two hundred forty million, four hundred four thousand, twenty-one".