1245802249 has 2 divisors, whose sum is σ = 1245802250. Its totient is φ = 1245802248.

The previous prime is 1245802223. The next prime is 1245802267. The reversal of 1245802249 is 9422085421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1021761225 + 224041024 = 31965^2 + 14968^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245802249 - 2⁷ = 1245802121 is a prime.

It is a super-2 number, since 2×1245802249² = 3104046487226916002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1245802219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622901124 + 622901125.

It is an arithmetic number, because the mean of its divisors is an integer number (622901125).

Almost surely, 2^1245802249 is an apocalyptic number.

It is an amenable number.

1245802249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245802249 is an equidigital number, since it uses as much as digits as its factorization.

1245802249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1245802249 is about 35295.9239714730. The cubic root of 1245802249 is about 1076.0101552940.

The spelling of 1245802249 in words is "one billion, two hundred forty-five million, eight hundred two thousand, two hundred forty-nine".