4102661 has 4 divisors (see below), whose sum is σ = 4344012. Its totient is φ = 3861312.

The previous prime is 4102649. The next prime is 4102663. The reversal of 4102661 is 1662014.

It is a happy number.

4102661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2825761 + 1276900 = 1681^2 + 1130^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4102661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4102663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120650 + ... + 120683.

It is an arithmetic number, because the mean of its divisors is an integer number (1086003).

Almost surely, 2^4102661 is an apocalyptic number.

It is an amenable number.

4102661 is a deficient number, since it is larger than the sum of its proper divisors (241351).

4102661 is a wasteful number, since it uses less digits than its factorization.

4102661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241350.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 4102661 is about 2025.5026536640. The cubic root of 4102661 is about 160.0866847983.

Adding to 4102661 its reverse (1662014), we get a palindrome (5764675).

The spelling of 4102661 in words is "four million, one hundred two thousand, six hundred sixty-one".