1111242817 has 4 divisors (see below), whose sum is σ = 1115343616. Its totient is φ = 1107142020.

The previous prime is 1111242787. The next prime is 1111242827. The reversal of 1111242817 is 7182421111.

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 a de Polignac number, because none of the positive numbers 2^k-1111242817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111242827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049993 + ... + 2050534.

It is an arithmetic number, because the mean of its divisors is an integer number (278835904).

Almost surely, 2^1111242817 is an apocalyptic number.

It is an amenable number.

1111242817 is a deficient number, since it is larger than the sum of its proper divisors (4100799).

1111242817 is an equidigital number, since it uses as much as digits as its factorization.

1111242817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100798.

The product of its digits is 896, while the sum is 28.

The square root of 1111242817 is about 33335.3088631259. The cubic root of 1111242817 is about 1035.7850911163.

Adding to 1111242817 its reverse (7182421111), we get a palindrome (8293663928).

The spelling of 1111242817 in words is "one billion, one hundred eleven million, two hundred forty-two thousand, eight hundred seventeen".