4120681 has 4 divisors (see below), whose sum is σ = 4363092. Its totient is φ = 3878272.

The previous prime is 4120679. The next prime is 4120709. The reversal of 4120681 is 1860214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1915456 + 2205225 = 1384^2 + 1485^2 .

It is a cyclic number.

It is not a de Polignac number, because 4120681 - 2¹ = 4120679 is a prime.

It is a super-2 number, since 2×4120681² = 33960023807522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4120621) 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, 121180 + ... + 121213.

It is an arithmetic number, because the mean of its divisors is an integer number (1090773).

Almost surely, 2^4120681 is an apocalyptic number.

It is an amenable number.

4120681 is a deficient number, since it is larger than the sum of its proper divisors (242411).

4120681 is a wasteful number, since it uses less digits than its factorization.

4120681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242410.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 4120681 is about 2029.9460583966. The cubic root of 4120681 is about 160.3207238592.

Adding to 4120681 its reverse (1860214), we get a palindrome (5980895).

The spelling of 4120681 in words is "four million, one hundred twenty thousand, six hundred eighty-one".