4200861 has 8 divisors (see below), whose sum is σ = 6401344. Its totient is φ = 2400480.

The previous prime is 4200827. The next prime is 4200863. The reversal of 4200861 is 1680024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4200861 - 2⁶ = 4200797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 200041 = 4200861 / (4 + 2 + 0 + 0 + 8 + 6 + 1).

It is an Ulam number.

It is a Duffinian number.

4200861 is a modest number, since divided by 861 gives 42 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100000 + ... + 100041.

It is an arithmetic number, because the mean of its divisors is an integer number (800168).

Almost surely, 2^4200861 is an apocalyptic number.

It is an amenable number.

4200861 is a deficient number, since it is larger than the sum of its proper divisors (2200483).

4200861 is a wasteful number, since it uses less digits than its factorization.

4200861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200051.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 4200861 is about 2049.6002049180. The cubic root of 4200861 is about 161.3538889449.

Adding to 4200861 its reverse (1680024), we get a palindrome (5880885).

The spelling of 4200861 in words is "four million, two hundred thousand, eight hundred sixty-one".