1289875 has 16 divisors (see below), whose sum is σ = 1707264. Its totient is φ = 969600.

The previous prime is 1289867. The next prime is 1289881. The reversal of 1289875 is 5789821.

It is not a de Polignac number, because 1289875 - 2³ = 1289867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1822 + ... + 2428.

It is an arithmetic number, because the mean of its divisors is an integer number (106704).

2^1289875 is an apocalyptic number.

1289875 is a deficient number, since it is larger than the sum of its proper divisors (417389).

1289875 is an equidigital number, since it uses as much as digits as its factorization.

1289875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 629 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 1289875 is about 1135.7266396453. The cubic root of 1289875 is about 108.8552071231.

The spelling of 1289875 in words is "one million, two hundred eighty-nine thousand, eight hundred seventy-five".