1242422317 has 2 divisors, whose sum is σ = 1242422318. Its totient is φ = 1242422316.

The previous prime is 1242422213. The next prime is 1242422323. The reversal of 1242422317 is 7132242421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 700184521 + 542237796 = 26461^2 + 23286^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242422317 - 2¹¹ = 1242420269 is a prime.

It is a super-2 number, since 2×1242422317² = 3087226427559296978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242422387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621211158 + 621211159.

It is an arithmetic number, because the mean of its divisors is an integer number (621211159).

Almost surely, 2^1242422317 is an apocalyptic number.

It is an amenable number.

1242422317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242422317 is an equidigital number, since it uses as much as digits as its factorization.

1242422317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 1242422317 is about 35248.0115325673. The cubic root of 1242422317 is about 1075.0361818000.

Adding to 1242422317 its reverse (7132242421), we get a palindrome (8374664738).

The spelling of 1242422317 in words is "one billion, two hundred forty-two million, four hundred twenty-two thousand, three hundred seventeen".