4202341421 has 2 divisors, whose sum is σ = 4202341422. Its totient is φ = 4202341420.

The previous prime is 4202341417. The next prime is 4202341427. The reversal of 4202341421 is 1241432024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2508607396 + 1693734025 = 50086^2 + 41155^2 .

It is a cyclic number.

It is not a de Polignac number, because 4202341421 - 2² = 4202341417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4202341427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2101170710 + 2101170711.

It is an arithmetic number, because the mean of its divisors is an integer number (2101170711).

Almost surely, 2^4202341421 is an apocalyptic number.

It is an amenable number.

4202341421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4202341421 is an equidigital number, since it uses as much as digits as its factorization.

4202341421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4202341421 is about 64825.4689223302. The cubic root of 4202341421 is about 1613.7284090348.

Adding to 4202341421 its reverse (1241432024), we get a palindrome (5443773445).

The spelling of 4202341421 in words is "four billion, two hundred two million, three hundred forty-one thousand, four hundred twenty-one".