4001111423 has 2 divisors, whose sum is σ = 4001111424. Its totient is φ = 4001111422.

The previous prime is 4001111419. The next prime is 4001111459. The reversal of 4001111423 is 3241111004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4001111423 - 2² = 4001111419 is a prime.

It is a super-2 number, since 2×4001111423² = 32017785238522169858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001111473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000555711 + 2000555712.

It is an arithmetic number, because the mean of its divisors is an integer number (2000555712).

Almost surely, 2^4001111423 is an apocalyptic number.

4001111423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001111423 is an equidigital number, since it uses as much as digits as its factorization.

4001111423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 4001111423 is about 63254.3391634123. The cubic root of 4001111423 is about 1587.5480611899.

Adding to 4001111423 its reverse (3241111004), we get a palindrome (7242222427).

The spelling of 4001111423 in words is "four billion, one million, one hundred eleven thousand, four hundred twenty-three".