4122857 has 4 divisors (see below), whose sum is σ = 4365396. Its totient is φ = 3880320.

The previous prime is 4122851. The next prime is 4122863. The reversal of 4122857 is 7582214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7582214 = 2 ⋅3791107.

It is an interprime number because it is at equal distance from previous prime (4122851) and next prime (4122863).

It can be written as a sum of positive squares in 2 ways, for example, as 2859481 + 1263376 = 1691^2 + 1124^2 .

It is a cyclic number.

It is not a de Polignac number, because 4122857 - 2¹² = 4118761 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4122851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121244 + ... + 121277.

It is an arithmetic number, because the mean of its divisors is an integer number (1091349).

Almost surely, 2^4122857 is an apocalyptic number.

It is an amenable number.

4122857 is a deficient number, since it is larger than the sum of its proper divisors (242539).

4122857 is a wasteful number, since it uses less digits than its factorization.

4122857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242538.

The product of its digits is 4480, while the sum is 29.

The square root of 4122857 is about 2030.4819624907. The cubic root of 4122857 is about 160.3489389776.

The spelling of 4122857 in words is "four million, one hundred twenty-two thousand, eight hundred fifty-seven".