1254839 has 2 divisors, whose sum is σ = 1254840. Its totient is φ = 1254838.

The previous prime is 1254833. The next prime is 1254863. The reversal of 1254839 is 9384521.

It is a weak prime.

It is an emirp because it is prime and its reverse (9384521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1254839 - 2⁴ = 1254823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627419 + 627420.

It is an arithmetic number, because the mean of its divisors is an integer number (627420).

2^1254839 is an apocalyptic number.

1254839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254839 is an equidigital number, since it uses as much as digits as its factorization.

1254839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 1254839 is about 1120.1959649990. The cubic root of 1254839 is about 107.8605596416.

The spelling of 1254839 in words is "one million, two hundred fifty-four thousand, eight hundred thirty-nine".