4042424121 has 8 divisors (see below), whose sum is σ = 5465813184. Its totient is φ = 2656992240.

The previous prime is 4042424107. The next prime is 4042424147. The reversal of 4042424121 is 1214242404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4042424121 - 2¹⁰ = 4042423097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4042424091 and 4042424100.

It is not an unprimeable number, because it can be changed into a prime (4042424161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9489046 + ... + 9489471.

It is an arithmetic number, because the mean of its divisors is an integer number (683226648).

Almost surely, 2^4042424121 is an apocalyptic number.

It is an amenable number.

4042424121 is a deficient number, since it is larger than the sum of its proper divisors (1423389063).

4042424121 is a wasteful number, since it uses less digits than its factorization.

4042424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18978591.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 4042424121 is about 63580.0607187505. The cubic root of 4042424121 is about 1592.9933355359.

Adding to 4042424121 its reverse (1214242404), we get a palindrome (5256666525).

The spelling of 4042424121 in words is "four billion, forty-two million, four hundred twenty-four thousand, one hundred twenty-one".