1111423 has 2 divisors, whose sum is σ = 1111424. Its totient is φ = 1111422.

The previous prime is 1111399. The next prime is 1111427. The reversal of 1111423 is 3241111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111423 is a prime.

It is a super-2 number, since 2×1111423² = 2470522169858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555711 + 555712.

It is an arithmetic number, because the mean of its divisors is an integer number (555712).

2^1111423 is an apocalyptic number.

1111423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111423 is an equidigital number, since it uses as much as digits as its factorization.

1111423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 13.

The square root of 1111423 is about 1054.2404848990. The cubic root of 1111423 is about 103.5841070714.

Adding to 1111423 its reverse (3241111), we get a palindrome (4352534).

The spelling of 1111423 in words is "one million, one hundred eleven thousand, four hundred twenty-three".