4241661421 has 2 divisors, whose sum is σ = 4241661422. Its totient is φ = 4241661420.

The previous prime is 4241661401. The next prime is 4241661503. The reversal of 4241661421 is 1241661424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4080015625 + 161645796 = 63875^2 + 12714^2 .

It is a cyclic number.

It is not a de Polignac number, because 4241661421 - 2⁷ = 4241661293 is a prime.

It is a super-2 number, since 2×4241661421² = 35983383220799478482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4241661401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120830710 + 2120830711.

It is an arithmetic number, because the mean of its divisors is an integer number (2120830711).

Almost surely, 2^4241661421 is an apocalyptic number.

It is an amenable number.

4241661421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4241661421 is an equidigital number, since it uses as much as digits as its factorization.

4241661421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 4241661421 is about 65128.0386699922. The cubic root of 4241661421 is about 1618.7458439571.

The spelling of 4241661421 in words is "four billion, two hundred forty-one million, six hundred sixty-one thousand, four hundred twenty-one".