404242020241 has 4 divisors (see below), whose sum is σ = 404243689984. Its totient is φ = 404240350500.

The previous prime is 404242020197. The next prime is 404242020271. The reversal of 404242020241 is 142020242404.

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 a de Polignac number, because none of the positive numbers 2^k-404242020241 is a prime.

It is a super-2 number, since 2×404242020241² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404242020271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394185 + ... + 981766.

It is an arithmetic number, because the mean of its divisors is an integer number (101060922496).

Almost surely, 2^404242020241 is an apocalyptic number.

It is an amenable number.

404242020241 is a deficient number, since it is larger than the sum of its proper divisors (1669743).

404242020241 is a wasteful number, since it uses less digits than its factorization.

404242020241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669742.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 404242020241 its reverse (142020242404), we get a palindrome (546262262645).

The spelling of 404242020241 in words is "four hundred four billion, two hundred forty-two million, twenty thousand, two hundred forty-one".