1424223257 has 2 divisors, whose sum is σ = 1424223258. Its totient is φ = 1424223256.

The previous prime is 1424223193. The next prime is 1424223259. The reversal of 1424223257 is 7523224241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1370406361 + 53816896 = 37019^2 + 7336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424223257 - 2⁶ = 1424223193 is a prime.

Together with 1424223259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1424223259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712111628 + 712111629.

It is an arithmetic number, because the mean of its divisors is an integer number (712111629).

Almost surely, 2^1424223257 is an apocalyptic number.

It is an amenable number.

1424223257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424223257 is an equidigital number, since it uses as much as digits as its factorization.

1424223257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 32.

The square root of 1424223257 is about 37738.8825616234. The cubic root of 1424223257 is about 1125.1040580620.

Adding to 1424223257 its reverse (7523224241), we get a palindrome (8947447498).

The spelling of 1424223257 in words is "one billion, four hundred twenty-four million, two hundred twenty-three thousand, two hundred fifty-seven".