400000242310423 has 2 divisors, whose sum is σ = 400000242310424. Its totient is φ = 400000242310422.

The previous prime is 400000242310421. The next prime is 400000242310441. The reversal of 400000242310423 is 324013242000004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400000242310423 - 2¹ = 400000242310421 is a prime.

It is a super-2 number, since 2×400000242310423² (a number of 30 digits) contains 22 as substring.

Together with 400000242310421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400000242310421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200000121155211 + 200000121155212.

It is an arithmetic number, because the mean of its divisors is an integer number (200000121155212).

Almost surely, 2^{400000242310423} is an apocalyptic number.

400000242310423 is a deficient number, since it is larger than the sum of its proper divisors (1).

400000242310423 is an equidigital number, since it uses as much as digits as its factorization.

400000242310423 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 400000242310423 its reverse (324013242000004), we get a palindrome (724013484310427).

The spelling of 400000242310423 in words is "four hundred trillion, two hundred forty-two million, three hundred ten thousand, four hundred twenty-three".