400122423 has 10 divisors (see below), whose sum is σ = 597713864. Its totient is φ = 266748228.

The previous prime is 400122413. The next prime is 400122431. The reversal of 400122423 is 324221004.

It is not a de Polignac number, because 400122423 - 2⁴ = 400122407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400122396 and 400122405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400122413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2469811 + ... + 2469972.

Almost surely, 2^400122423 is an apocalyptic number.

400122423 is a deficient number, since it is larger than the sum of its proper divisors (197591441).

400122423 is an equidigital number, since it uses as much as digits as its factorization.

400122423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4939795 (or 4939786 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 400122423 is about 20003.0603408578. The cubic root of 400122423 is about 736.8814604255.

Adding to 400122423 its reverse (324221004), we get a palindrome (724343427).

The spelling of 400122423 in words is "four hundred million, one hundred twenty-two thousand, four hundred twenty-three".