1117427 has 4 divisors (see below), whose sum is σ = 1183176. Its totient is φ = 1051680.

The previous prime is 1117379. The next prime is 1117433. The reversal of 1117427 is 7247111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7247111 = 241 ⋅30071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117427 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117477) 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, 32849 + ... + 32882.

It is an arithmetic number, because the mean of its divisors is an integer number (295794).

2^1117427 is an apocalyptic number.

1117427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1117427 is a deficient number, since it is larger than the sum of its proper divisors (65749).

1117427 is an equidigital number, since it uses as much as digits as its factorization.

1117427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65748.

The product of its digits is 392, while the sum is 23.

The square root of 1117427 is about 1057.0841972142. The cubic root of 1117427 is about 103.7702955408.

The spelling of 1117427 in words is "one million, one hundred seventeen thousand, four hundred twenty-seven".