4342013521 has 2 divisors, whose sum is σ = 4342013522. Its totient is φ = 4342013520.

The previous prime is 4342013519. The next prime is 4342013569. The reversal of 4342013521 is 1253102434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3084247296 + 1257766225 = 55536^2 + 35465^2 .

It is a cyclic number.

It is not a de Polignac number, because 4342013521 - 2¹ = 4342013519 is a prime.

Together with 4342013519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4342013821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2171006760 + 2171006761.

It is an arithmetic number, because the mean of its divisors is an integer number (2171006761).

Almost surely, 2^4342013521 is an apocalyptic number.

It is an amenable number.

4342013521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4342013521 is an equidigital number, since it uses as much as digits as its factorization.

4342013521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 4342013521 is about 65893.9566348842. The cubic root of 4342013521 is about 1631.4122680659.

Adding to 4342013521 its reverse (1253102434), we get a palindrome (5595115955).

The spelling of 4342013521 in words is "four billion, three hundred forty-two million, thirteen thousand, five hundred twenty-one".