1243424023 has 2 divisors, whose sum is σ = 1243424024. Its totient is φ = 1243424022.

The previous prime is 1243423969. The next prime is 1243424027. The reversal of 1243424023 is 3204243421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243424023 - 2¹⁷ = 1243292951 is a prime.

It is a super-2 number, since 2×1243424023² = 3092206601947009058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243424027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621712011 + 621712012.

It is an arithmetic number, because the mean of its divisors is an integer number (621712012).

Almost surely, 2^1243424023 is an apocalyptic number.

1243424023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243424023 is an equidigital number, since it uses as much as digits as its factorization.

1243424023 is an evil number, because the sum of its binary digits is even.

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

The square root of 1243424023 is about 35262.2180669339. The cubic root of 1243424023 is about 1075.3250210293.

Adding to 1243424023 its reverse (3204243421), we get a palindrome (4447667444).

The spelling of 1243424023 in words is "one billion, two hundred forty-three million, four hundred twenty-four thousand, twenty-three".