1261275 has 24 divisors (see below), whose sum is σ = 2124864. Its totient is φ = 660000.

The previous prime is 1261261. The next prime is 1261279. The reversal of 1261275 is 5721621.

It is not a de Polignac number, because 1261275 - 2⁴ = 1261259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1261279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4900 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (88536).

2^1261275 is an apocalyptic number.

1261275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1261275 is a deficient number, since it is larger than the sum of its proper divisors (863589).

1261275 is a wasteful number, since it uses less digits than its factorization.

1261275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 326 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 1261275 is about 1123.0650025711. The cubic root of 1261275 is about 108.0446488914.

Adding to 1261275 its reverse (5721621), we get a palindrome (6982896).

The spelling of 1261275 in words is "one million, two hundred sixty-one thousand, two hundred seventy-five".