1243052423 has 2 divisors, whose sum is σ = 1243052424. Its totient is φ = 1243052422.

The previous prime is 1243052351. The next prime is 1243052429. The reversal of 1243052423 is 3242503421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243052423 - 2¹² = 1243048327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243052392 and 1243052401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243052429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621526211 + 621526212.

It is an arithmetic number, because the mean of its divisors is an integer number (621526212).

Almost surely, 2^1243052423 is an apocalyptic number.

1243052423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243052423 is an equidigital number, since it uses as much as digits as its factorization.

1243052423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1243052423 is about 35256.9485775499. The cubic root of 1243052423 is about 1075.2178892750.

Adding to 1243052423 its reverse (3242503421), we get a palindrome (4485555844).

The spelling of 1243052423 in words is "one billion, two hundred forty-three million, fifty-two thousand, four hundred twenty-three".