1245449 has 2 divisors, whose sum is σ = 1245450. Its totient is φ = 1245448.

The previous prime is 1245421. The next prime is 1245451. The reversal of 1245449 is 9445421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 573049 = 820^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245449 - 2²⁰ = 196873 is a prime.

It is a super-2 number, since 2×1245449² = 3102286423202, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1245451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1245479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622724 + 622725.

It is an arithmetic number, because the mean of its divisors is an integer number (622725).

2^1245449 is an apocalyptic number.

It is an amenable number.

1245449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245449 is an equidigital number, since it uses as much as digits as its factorization.

1245449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 1245449 is about 1115.9968637949. The cubic root of 1245449 is about 107.5908444277.

The spelling of 1245449 in words is "one million, two hundred forty-five thousand, four hundred forty-nine".