4191071 has 2 divisors, whose sum is σ = 4191072. Its totient is φ = 4191070.

The previous prime is 4191067. The next prime is 4191073. The reversal of 4191071 is 1701914.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4191071 - 2² = 4191067 is a prime.

It is a super-2 number, since 2×4191071² = 35130152254082, which contains 22 as substring.

Together with 4191073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4191073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2095535 + 2095536.

It is an arithmetic number, because the mean of its divisors is an integer number (2095536).

Almost surely, 2^4191071 is an apocalyptic number.

4191071 is a deficient number, since it is larger than the sum of its proper divisors (1).

4191071 is an equidigital number, since it uses as much as digits as its factorization.

4191071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 4191071 is about 2047.2105411999. The cubic root of 4191071 is about 161.2284477335.

Adding to 4191071 its reverse (1701914), we get a palindrome (5892985).

The spelling of 4191071 in words is "four million, one hundred ninety-one thousand, seventy-one".