11111427 has 6 divisors (see below), whose sum is σ = 16049852. Its totient is φ = 7407612.

The previous prime is 11111417. The next prime is 11111431. The reversal of 11111427 is 72411111.

It is not a de Polignac number, because 11111427 - 2⁸ = 11111171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617293 + ... + 617310.

Almost surely, 2^11111427 is an apocalyptic number.

11111427 is a deficient number, since it is larger than the sum of its proper divisors (4938425).

11111427 is a wasteful number, since it uses less digits than its factorization.

11111427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234609 (or 1234606 counting only the distinct ones).

The product of its digits is 56, while the sum is 18.

The square root of 11111427 is about 3333.3807163299. The cubic root of 11111427 is about 223.1464313383.

Adding to 11111427 its reverse (72411111), we get a palindrome (83522538).

The spelling of 11111427 in words is "eleven million, one hundred eleven thousand, four hundred twenty-seven".