4123591 has 2 divisors, whose sum is σ = 4123592. Its totient is φ = 4123590.

The previous prime is 4123583. The next prime is 4123621. The reversal of 4123591 is 1953214.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4123591 - 2³ = 4123583 is a prime.

It is equal to p₂₉₁₂₉₂ and since 4123591 and 291292 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4123531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061795 + 2061796.

It is an arithmetic number, because the mean of its divisors is an integer number (2061796).

Almost surely, 2^4123591 is an apocalyptic number.

4123591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4123591 is an equidigital number, since it uses as much as digits as its factorization.

4123591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 4123591 is about 2030.6626997116. The cubic root of 4123591 is about 160.3584541542.

It can be divided in two parts, 41 and 23591, that added together give a palindrome (23632).

The spelling of 4123591 in words is "four million, one hundred twenty-three thousand, five hundred ninety-one".