1274287 has 4 divisors (see below), whose sum is σ = 1456336. Its totient is φ = 1092240.

The previous prime is 1274267. The next prime is 1274291. The reversal of 1274287 is 7824721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1274287 is a prime.

1274287 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91014 + ... + 91027.

It is an arithmetic number, because the mean of its divisors is an integer number (364084).

2^1274287 is an apocalyptic number.

1274287 is a deficient number, since it is larger than the sum of its proper divisors (182049).

1274287 is an equidigital number, since it uses as much as digits as its factorization.

1274287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182048.

The product of its digits is 6272, while the sum is 31.

The square root of 1274287 is about 1128.8432132054. The cubic root of 1274287 is about 108.4149276157.

The spelling of 1274287 in words is "one million, two hundred seventy-four thousand, two hundred eighty-seven".