401004043423 has 2 divisors, whose sum is σ = 401004043424. Its totient is φ = 401004043422.

The previous prime is 401004043409. The next prime is 401004043457. The reversal of 401004043423 is 324340400104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401004043423 - 2¹³ = 401004035231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401004043483) 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 as a sum of consecutive naturals, namely, 200502021711 + 200502021712.

It is an arithmetic number, because the mean of its divisors is an integer number (200502021712).

Almost surely, 2^401004043423 is an apocalyptic number.

401004043423 is a deficient number, since it is larger than the sum of its proper divisors (1).

401004043423 is an equidigital number, since it uses as much as digits as its factorization.

401004043423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 401004043423 its reverse (324340400104), we get a palindrome (725344443527).

The spelling of 401004043423 in words is "four hundred one billion, four million, forty-three thousand, four hundred twenty-three".