1249867 has 4 divisors (see below), whose sum is σ = 1261656. Its totient is φ = 1238080.

The previous prime is 1249861. The next prime is 1249873. The reversal of 1249867 is 7689421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7689421 = 359 ⋅21419.

It is an interprime number because it is at equal distance from previous prime (1249861) and next prime (1249873).

It is a cyclic number.

It is not a de Polignac number, because 1249867 - 2⁷ = 1249739 is a prime.

It is a Duffinian number.

1249867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1249861) 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, 5734 + ... + 5947.

It is an arithmetic number, because the mean of its divisors is an integer number (315414).

2^1249867 is an apocalyptic number.

1249867 is a deficient number, since it is larger than the sum of its proper divisors (11789).

1249867 is a wasteful number, since it uses less digits than its factorization.

1249867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11788.

The product of its digits is 24192, while the sum is 37.

The square root of 1249867 is about 1117.9745077595. The cubic root of 1249867 is about 107.7179138352.

It can be divided in two parts, 1249 and 867, that added together give a square (2116 = 46²).

The spelling of 1249867 in words is "one million, two hundred forty-nine thousand, eight hundred sixty-seven".