1281267 has 24 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 768384.

The previous prime is 1281263. The next prime is 1281281. The reversal of 1281267 is 7621821.

It is not a de Polignac number, because 1281267 - 2² = 1281263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1281267.

It is not an unprimeable number, because it can be changed into a prime (1281263) 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, 5383 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (85176).

2^1281267 is an apocalyptic number.

1281267 is a deficient number, since it is larger than the sum of its proper divisors (762957).

1281267 is a wasteful number, since it uses less digits than its factorization.

1281267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 296 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1281267 is about 1131.9306515860. The cubic root of 1281267 is about 108.6125175075.

The spelling of 1281267 in words is "one million, two hundred eighty-one thousand, two hundred sixty-seven".