1249287 has 16 divisors (see below), whose sum is σ = 1817088. Its totient is φ = 758880.

The previous prime is 1249273. The next prime is 1249301. The reversal of 1249287 is 7829421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1249273) and next prime (1249301).

It is not a de Polignac number, because 1249287 - 2⁷ = 1249159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3862 + ... + 4172.

It is an arithmetic number, because the mean of its divisors is an integer number (113568).

2^1249287 is an apocalyptic number.

1249287 is a deficient number, since it is larger than the sum of its proper divisors (567801).

1249287 is a wasteful number, since it uses less digits than its factorization.

1249287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430.

The product of its digits is 8064, while the sum is 33.

The square root of 1249287 is about 1117.7150799734. The cubic root of 1249287 is about 107.7012491137.

The spelling of 1249287 in words is "one million, two hundred forty-nine thousand, two hundred eighty-seven".