1243712 has 14 divisors (see below), whose sum is σ = 2468118. Its totient is φ = 621824.

The previous prime is 1243709. The next prime is 1243717. The reversal of 1243712 is 2173421.

It can be written as a sum of positive squares in only one way, i.e., 802816 + 440896 = 896^2 + 664^2 .

It is not an unprimeable number, because it can be changed into a prime (1243717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9653 + ... + 9780.

2^1243712 is an apocalyptic number.

It is an amenable number.

1243712 is a deficient number, since it is larger than the sum of its proper divisors (1224406).

1243712 is an equidigital number, since it uses as much as digits as its factorization.

1243712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19445 (or 19435 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 1243712 is about 1115.2183642677. The cubic root of 1243712 is about 107.5408029712.

The spelling of 1243712 in words is "one million, two hundred forty-three thousand, seven hundred twelve".