4126391 has 2 divisors, whose sum is σ = 4126392. Its totient is φ = 4126390.

The previous prime is 4126373. The next prime is 4126399. The reversal of 4126391 is 1936214.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4126391 - 2⁶ = 4126327 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4126391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4126399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2063195 + 2063196.

It is an arithmetic number, because the mean of its divisors is an integer number (2063196).

Almost surely, 2^4126391 is an apocalyptic number.

4126391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4126391 is an equidigital number, since it uses as much as digits as its factorization.

4126391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 4126391 is about 2031.3520128230. The cubic root of 4126391 is about 160.3947414648.

The spelling of 4126391 in words is "four million, one hundred twenty-six thousand, three hundred ninety-one".