4142861 has 4 divisors (see below), whose sum is σ = 4189500. Its totient is φ = 4096224.

The previous prime is 4142857. The next prime is 4142863. The reversal of 4142861 is 1682414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1682414 = 2 ⋅841207.

It can be written as a sum of positive squares in 2 ways, for example, as 2656900 + 1485961 = 1630^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142861 - 2² = 4142857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4142861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4142863) 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, 23186 + ... + 23363.

It is an arithmetic number, because the mean of its divisors is an integer number (1047375).

Almost surely, 2^4142861 is an apocalyptic number.

It is an amenable number.

4142861 is a deficient number, since it is larger than the sum of its proper divisors (46639).

4142861 is an equidigital number, since it uses as much as digits as its factorization.

4142861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46638.

The product of its digits is 1536, while the sum is 26.

The square root of 4142861 is about 2035.4019259105. The cubic root of 4142861 is about 160.6078570328.

The spelling of 4142861 in words is "four million, one hundred forty-two thousand, eight hundred sixty-one".