1243113 has 16 divisors (see below), whose sum is σ = 1769280. Its totient is φ = 774144.

The previous prime is 1243111. The next prime is 1243129. The reversal of 1243113 is 3113421.

It is not a de Polignac number, because 1243113 - 2¹ = 1243111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243092 and 1243101.

It is not an unprimeable number, because it can be changed into a prime (1243111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6345 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (110580).

2^1243113 is an apocalyptic number.

It is an amenable number.

1243113 is a deficient number, since it is larger than the sum of its proper divisors (526167).

1243113 is a wasteful number, since it uses less digits than its factorization.

1243113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its digits is 72, while the sum is 15.

The square root of 1243113 is about 1114.9497746535. The cubic root of 1243113 is about 107.5235354995.

Adding to 1243113 its reverse (3113421), we get a palindrome (4356534).

The spelling of 1243113 in words is "one million, two hundred forty-three thousand, one hundred thirteen".