1293287 has 2 divisors, whose sum is σ = 1293288. Its totient is φ = 1293286.

The previous prime is 1293283. The next prime is 1293307. The reversal of 1293287 is 7823921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1293287 - 2² = 1293283 is a prime.

It is a Chen prime.

It is equal to p₉₉₅₅₄ and since 1293287 and 99554 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1293283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646643 + 646644.

It is an arithmetic number, because the mean of its divisors is an integer number (646644).

2^1293287 is an apocalyptic number.

1293287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293287 is an equidigital number, since it uses as much as digits as its factorization.

1293287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 1293287 is about 1137.2277696223. The cubic root of 1293287 is about 108.9511045180.

It can be divided in two parts, 1293 and 287, that multiplied together give a triangular number (371091 = T₈₆₁).

The spelling of 1293287 in words is "one million, two hundred ninety-three thousand, two hundred eighty-seven".