1123817 has 4 divisors (see below), whose sum is σ = 1147776. Its totient is φ = 1099860.

The previous prime is 1123807. The next prime is 1123841. The reversal of 1123817 is 7183211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1123817 - 2⁸ = 1123561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123792 and 1123801.

It is not an unprimeable number, because it can be changed into a prime (1123807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11909 + ... + 12002.

It is an arithmetic number, because the mean of its divisors is an integer number (286944).

2^1123817 is an apocalyptic number.

It is an amenable number.

1123817 is a deficient number, since it is larger than the sum of its proper divisors (23959).

1123817 is an equidigital number, since it uses as much as digits as its factorization.

1123817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23958.

The product of its digits is 336, while the sum is 23.

The square root of 1123817 is about 1060.1023535489. The cubic root of 1123817 is about 103.9677229718.

The spelling of 1123817 in words is "one million, one hundred twenty-three thousand, eight hundred seventeen".