1252789 has 4 divisors (see below), whose sum is σ = 1265056. Its totient is φ = 1240524.

The previous prime is 1252777. The next prime is 1252799. The reversal of 1252789 is 9872521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1252789 - 2⁷ = 1252661 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5979 + ... + 6184.

It is an arithmetic number, because the mean of its divisors is an integer number (316264).

2^1252789 is an apocalyptic number.

It is an amenable number.

1252789 is a deficient number, since it is larger than the sum of its proper divisors (12267).

1252789 is a wasteful number, since it uses less digits than its factorization.

1252789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12266.

The product of its digits is 10080, while the sum is 34.

The square root of 1252789 is about 1119.2805725108. The cubic root of 1252789 is about 107.8017912349.

The spelling of 1252789 in words is "one million, two hundred fifty-two thousand, seven hundred eighty-nine".