4120621 has 2 divisors, whose sum is σ = 4120622. Its totient is φ = 4120620.

The previous prime is 4120609. The next prime is 4120651. The reversal of 4120621 is 1260214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 1179396 = 1715^2 + 1086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4120621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4120595 and 4120604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4120651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060310 + 2060311.

It is an arithmetic number, because the mean of its divisors is an integer number (2060311).

Almost surely, 2^4120621 is an apocalyptic number.

It is an amenable number.

4120621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4120621 is an equidigital number, since it uses as much as digits as its factorization.

4120621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4120621 is about 2029.9312796250. The cubic root of 4120621 is about 160.3199457281.

Adding to 4120621 its reverse (1260214), we get a palindrome (5380835).

The spelling of 4120621 in words is "four million, one hundred twenty thousand, six hundred twenty-one".