1250839 has 2 divisors, whose sum is σ = 1250840. Its totient is φ = 1250838.

The previous prime is 1250831. The next prime is 1250863. The reversal of 1250839 is 9380521.

It is a weak prime.

It is an emirp because it is prime and its reverse (9380521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1250839 - 2³ = 1250831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1250831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625419 + 625420.

It is an arithmetic number, because the mean of its divisors is an integer number (625420).

2^1250839 is an apocalyptic number.

1250839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250839 is an equidigital number, since it uses as much as digits as its factorization.

1250839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1250839 is about 1118.4091380170. The cubic root of 1250839 is about 107.7458300542.

The spelling of 1250839 in words is "one million, two hundred fifty thousand, eight hundred thirty-nine".