1252439 has 2 divisors, whose sum is σ = 1252440. Its totient is φ = 1252438.

The previous prime is 1252429. The next prime is 1252451. The reversal of 1252439 is 9342521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252439 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626219 + 626220.

It is an arithmetic number, because the mean of its divisors is an integer number (626220).

2^1252439 is an apocalyptic number.

1252439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252439 is an equidigital number, since it uses as much as digits as its factorization.

1252439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 1252439 is about 1119.1242111580. The cubic root of 1252439 is about 107.7917511986.

The spelling of 1252439 in words is "one million, two hundred fifty-two thousand, four hundred thirty-nine".