1247875 has 16 divisors (see below), whose sum is σ = 1591200. Its totient is φ = 976800.

The previous prime is 1247867. The next prime is 1247879. The reversal of 1247875 is 5787421.

It is a happy number.

It is not a de Polignac number, because 1247875 - 2³ = 1247867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1247875.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8301 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (99450).

2^1247875 is an apocalyptic number.

1247875 is a deficient number, since it is larger than the sum of its proper divisors (343325).

1247875 is an equidigital number, since it uses as much as digits as its factorization.

1247875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 221 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 1247875 is about 1117.0832556260. The cubic root of 1247875 is about 107.6606575620.

The spelling of 1247875 in words is "one million, two hundred forty-seven thousand, eight hundred seventy-five".