1275249 has 4 divisors (see below), whose sum is σ = 1700336. Its totient is φ = 850164.

The previous prime is 1275227. The next prime is 1275269. The reversal of 1275249 is 9425721.

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 not a de Polignac number, because 1275249 - 2⁷ = 1275121 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

1275249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1275269) 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, 212539 + ... + 212544.

It is an arithmetic number, because the mean of its divisors is an integer number (425084).

2^1275249 is an apocalyptic number.

It is an amenable number.

1275249 is a deficient number, since it is larger than the sum of its proper divisors (425087).

1275249 is an equidigital number, since it uses as much as digits as its factorization.

1275249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425086.

The product of its digits is 5040, while the sum is 30.

The square root of 1275249 is about 1129.2692327342. The cubic root of 1275249 is about 108.4422027183.

The spelling of 1275249 in words is "one million, two hundred seventy-five thousand, two hundred forty-nine".