1279251 has 12 divisors (see below), whose sum is σ = 1945320. Its totient is φ = 807840.

The previous prime is 1279249. The next prime is 1279253. The reversal of 1279251 is 1529721.

It is an interprime number because it is at equal distance from previous prime (1279249) and next prime (1279253).

It is not a de Polignac number, because 1279251 - 2¹ = 1279249 is a prime.

1279251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1279253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3570 + ... + 3911.

It is an arithmetic number, because the mean of its divisors is an integer number (162110).

2^1279251 is an apocalyptic number.

1279251 is a deficient number, since it is larger than the sum of its proper divisors (666069).

1279251 is a wasteful number, since it uses less digits than its factorization.

1279251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7506 (or 7503 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1279251 is about 1131.0397870986. The cubic root of 1279251 is about 108.5555224192. Note that the first 4 decimals are identical.

The spelling of 1279251 in words is "one million, two hundred seventy-nine thousand, two hundred fifty-one".