1262839 has 2 divisors, whose sum is σ = 1262840. Its totient is φ = 1262838.

The previous prime is 1262819. The next prime is 1262851. The reversal of 1262839 is 9382621.

It is a strong prime.

It is an emirp because it is prime and its reverse (9382621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1262839 - 2⁷ = 1262711 is a prime.

1262839 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1262839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631419 + 631420.

It is an arithmetic number, because the mean of its divisors is an integer number (631420).

2^1262839 is an apocalyptic number.

1262839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262839 is an equidigital number, since it uses as much as digits as its factorization.

1262839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 1262839 is about 1123.7610956071. The cubic root of 1262839 is about 108.0892894423.

The spelling of 1262839 in words is "one million, two hundred sixty-two thousand, eight hundred thirty-nine".