1244242423 has 2 divisors, whose sum is σ = 1244242424. Its totient is φ = 1244242422.

The previous prime is 1244242409. The next prime is 1244242451. The reversal of 1244242423 is 3242424421.

It is an a-pointer prime, because the next prime (1244242451) can be obtained adding 1244242423 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1244242423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1244242391 and 1244242400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244242403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622121211 + 622121212.

It is an arithmetic number, because the mean of its divisors is an integer number (622121212).

Almost surely, 2^1244242423 is an apocalyptic number.

1244242423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244242423 is an equidigital number, since it uses as much as digits as its factorization.

1244242423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 28.

The square root of 1244242423 is about 35273.8206464795. The cubic root of 1244242423 is about 1075.5608893452.

Adding to 1244242423 its reverse (3242424421), we get a palindrome (4486666844).

The spelling of 1244242423 in words is "one billion, two hundred forty-four million, two hundred forty-two thousand, four hundred twenty-three".