1242244249 has 2 divisors, whose sum is σ = 1242244250. Its totient is φ = 1242244248.

The previous prime is 1242244207. The next prime is 1242244291. The reversal of 1242244249 is 9424422421.

It is a balanced prime because it is at equal distance from previous prime (1242244207) and next prime (1242244291).

It can be written as a sum of positive squares in only one way, i.e., 996538624 + 245705625 = 31568^2 + 15675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242244249 - 2¹¹ = 1242242201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242244849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621122124 + 621122125.

It is an arithmetic number, because the mean of its divisors is an integer number (621122125).

Almost surely, 2^1242244249 is an apocalyptic number.

It is an amenable number.

1242244249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242244249 is an equidigital number, since it uses as much as digits as its factorization.

1242244249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 34.

The square root of 1242244249 is about 35245.4855123319. The cubic root of 1242244249 is about 1074.9848201210.

The spelling of 1242244249 in words is "one billion, two hundred forty-two million, two hundred forty-four thousand, two hundred forty-nine".