4201081 has 4 divisors (see below), whose sum is σ = 4210000. Its totient is φ = 4192164.

The previous prime is 4201079. The next prime is 4201103. The reversal of 4201081 is 1801024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4201081 - 2¹ = 4201079 is a prime.

It is a super-2 number, since 2×4201081² = 35298163137122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

4201081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4201051) 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, 3711 + ... + 4708.

It is an arithmetic number, because the mean of its divisors is an integer number (1052500).

Almost surely, 2^4201081 is an apocalyptic number.

It is an amenable number.

4201081 is a deficient number, since it is larger than the sum of its proper divisors (8919).

4201081 is an equidigital number, since it uses as much as digits as its factorization.

4201081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8918.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 4201081 is about 2049.6538732186. The cubic root of 4201081 is about 161.3567056084.

The spelling of 4201081 in words is "four million, two hundred one thousand, eighty-one".