404001741421 has 2 divisors, whose sum is σ = 404001741422. Its totient is φ = 404001741420.

The previous prime is 404001741397. The next prime is 404001741427. The reversal of 404001741421 is 124147100404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227214288900 + 176787452521 = 476670^2 + 420461^2 .

It is a cyclic number.

It is not a de Polignac number, because 404001741421 - 2¹⁵ = 404001708653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404001741421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404001741427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202000870710 + 202000870711.

It is an arithmetic number, because the mean of its divisors is an integer number (202000870711).

Almost surely, 2^404001741421 is an apocalyptic number.

It is an amenable number.

404001741421 is a deficient number, since it is larger than the sum of its proper divisors (1).

404001741421 is an equidigital number, since it uses as much as digits as its factorization.

404001741421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

Adding to 404001741421 its reverse (124147100404), we get a palindrome (528148841825).

The spelling of 404001741421 in words is "four hundred four billion, one million, seven hundred forty-one thousand, four hundred twenty-one".