1423243229 has 2 divisors, whose sum is σ = 1423243230. Its totient is φ = 1423243228.

The previous prime is 1423243189. The next prime is 1423243231. The reversal of 1423243229 is 9223423241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1325688100 + 97555129 = 36410^2 + 9877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423243229 is a prime.

Together with 1423243231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1423243195 and 1423243204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423243429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711621614 + 711621615.

It is an arithmetic number, because the mean of its divisors is an integer number (711621615).

Almost surely, 2^1423243229 is an apocalyptic number.

It is an amenable number.

1423243229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423243229 is an equidigital number, since it uses as much as digits as its factorization.

1423243229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 1423243229 is about 37725.8959999627. The cubic root of 1423243229 is about 1124.8459322184.

The spelling of 1423243229 in words is "one billion, four hundred twenty-three million, two hundred forty-three thousand, two hundred twenty-nine".