4143857 has 2 divisors, whose sum is σ = 4143858. Its totient is φ = 4143856.

The previous prime is 4143851. The next prime is 4143859. The reversal of 4143857 is 7583414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3964081 + 179776 = 1991^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 4143857 - 2¹² = 4139761 is a prime.

Together with 4143859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4143851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071928 + 2071929.

It is an arithmetic number, because the mean of its divisors is an integer number (2071929).

Almost surely, 2^4143857 is an apocalyptic number.

It is an amenable number.

4143857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4143857 is an equidigital number, since it uses as much as digits as its factorization.

4143857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 4143857 is about 2035.6465803277. The cubic root of 4143857 is about 160.6207267709.

The spelling of 4143857 in words is "four million, one hundred forty-three thousand, eight hundred fifty-seven".