1252839 has 8 divisors (see below), whose sum is σ = 1909120. Its totient is φ = 715896.

The previous prime is 1252819. The next prime is 1252843. The reversal of 1252839 is 9382521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252839 - 2⁷ = 1252711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29809 + ... + 29850.

It is an arithmetic number, because the mean of its divisors is an integer number (238640).

2^1252839 is an apocalyptic number.

1252839 is a deficient number, since it is larger than the sum of its proper divisors (656281).

1252839 is an equidigital number, since it uses as much as digits as its factorization.

1252839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59669.

The product of its digits is 4320, while the sum is 30.

The square root of 1252839 is about 1119.3029080638. The cubic root of 1252839 is about 107.8032253731.

The spelling of 1252839 in words is "one million, two hundred fifty-two thousand, eight hundred thirty-nine".