4242613421 has 4 divisors (see below), whose sum is σ = 4267137372. Its totient is φ = 4218089472.

The previous prime is 4242613409. The next prime is 4242613423. The reversal of 4242613421 is 1243162424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3397257796 + 845355625 = 58286^2 + 29075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4242613421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242613423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12261716 + ... + 12262061.

It is an arithmetic number, because the mean of its divisors is an integer number (1066784343).

Almost surely, 2^4242613421 is an apocalyptic number.

It is an amenable number.

4242613421 is a deficient number, since it is larger than the sum of its proper divisors (24523951).

4242613421 is a wasteful number, since it uses less digits than its factorization.

4242613421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24523950.

The product of its digits is 9216, while the sum is 29.

The square root of 4242613421 is about 65135.3469400448. The cubic root of 4242613421 is about 1618.8669388626.

Adding to 4242613421 its reverse (1243162424), we get a palindrome (5485775845).

The spelling of 4242613421 in words is "four billion, two hundred forty-two million, six hundred thirteen thousand, four hundred twenty-one".