404240121001 has 16 divisors (see below), whose sum is σ = 411720624000. Its totient is φ = 396812707200.

The previous prime is 404240120989. The next prime is 404240121011. The reversal of 404240121001 is 100121042404.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404240121001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404240121001.

It is not an unprimeable number, because it can be changed into a prime (404240121011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17110485 + ... + 17134093.

It is an arithmetic number, because the mean of its divisors is an integer number (25732539000).

Almost surely, 2^404240121001 is an apocalyptic number.

It is an amenable number.

404240121001 is a deficient number, since it is larger than the sum of its proper divisors (7480502999).

404240121001 is a wasteful number, since it uses less digits than its factorization.

404240121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24720.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 404240121001 its reverse (100121042404), we get a palindrome (504361163405).

The spelling of 404240121001 in words is "four hundred four billion, two hundred forty million, one hundred twenty-one thousand, one".