4122661 has 2 divisors, whose sum is σ = 4122662. Its totient is φ = 4122660.

The previous prime is 4122647. The next prime is 4122667. The reversal of 4122661 is 1662214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2232036 + 1890625 = 1494^2 + 1375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4122661 is a prime.

It is equal to p₂₉₁₂₃₅ and since 4122661 and 291235 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4122667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061330 + 2061331.

It is an arithmetic number, because the mean of its divisors is an integer number (2061331).

Almost surely, 2^4122661 is an apocalyptic number.

It is an amenable number.

4122661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4122661 is an equidigital number, since it uses as much as digits as its factorization.

4122661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 4122661 is about 2030.4336975139. The cubic root of 4122661 is about 160.3463979492.

Adding to 4122661 its reverse (1662214), we get a palindrome (5784875).

The spelling of 4122661 in words is "four million, one hundred twenty-two thousand, six hundred sixty-one".