1400243423 has 2 divisors, whose sum is σ = 1400243424. Its totient is φ = 1400243422.

The previous prime is 1400243419. The next prime is 1400243447. The reversal of 1400243423 is 3243420041.

It is a weak prime.

It is an emirp because it is prime and its reverse (3243420041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1400243423 - 2² = 1400243419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400243483) 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 as a sum of consecutive naturals, namely, 700121711 + 700121712.

It is an arithmetic number, because the mean of its divisors is an integer number (700121712).

Almost surely, 2^1400243423 is an apocalyptic number.

1400243423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400243423 is an equidigital number, since it uses as much as digits as its factorization.

1400243423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1400243423 is about 37419.8266030189. The cubic root of 1400243423 is about 1118.7537751378.

Adding to 1400243423 its reverse (3243420041), we get a palindrome (4643663464).

The spelling of 1400243423 in words is "one billion, four hundred million, two hundred forty-three thousand, four hundred twenty-three".