1243868 has 12 divisors (see below), whose sum is σ = 2252040. Its totient is φ = 600432.

The previous prime is 1243859. The next prime is 1243877. The reversal of 1243868 is 8683421.

It is an interprime number because it is at equal distance from previous prime (1243859) and next prime (1243877).

It is a congruent number.

It is an unprimeable number.

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, 5246 + ... + 5477.

It is an arithmetic number, because the mean of its divisors is an integer number (187670).

2^1243868 is an apocalyptic number.

It is an amenable number.

1243868 is a deficient number, since it is larger than the sum of its proper divisors (1008172).

1243868 is a wasteful number, since it uses less digits than its factorization.

1243868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10756 (or 10754 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1243868 is about 1115.2883035341. The cubic root of 1243868 is about 107.5452990989.

The spelling of 1243868 in words is "one million, two hundred forty-three thousand, eight hundred sixty-eight".