1240892249 has 2 divisors, whose sum is σ = 1240892250. Its totient is φ = 1240892248.

The previous prime is 1240892221. The next prime is 1240892269. The reversal of 1240892249 is 9422980421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1131313225 + 109579024 = 33635^2 + 10468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240892249 - 2²⁰ = 1239843673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240892269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620446124 + 620446125.

It is an arithmetic number, because the mean of its divisors is an integer number (620446125).

Almost surely, 2^1240892249 is an apocalyptic number.

It is an amenable number.

1240892249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240892249 is an equidigital number, since it uses as much as digits as its factorization.

1240892249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1240892249 is about 35226.3005295759. The cubic root of 1240892249 is about 1074.5946909763.

The spelling of 1240892249 in words is "one billion, two hundred forty million, eight hundred ninety-two thousand, two hundred forty-nine".