5242424021 has 4 divisors (see below), whose sum is σ = 5243113344. Its totient is φ = 5241734700.

The previous prime is 5242423999. The next prime is 5242424023. The reversal of 5242424021 is 1204242425.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5242424021 - 2⁶ = 5242423957 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 (5242424023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333125 + ... + 348506.

It is an arithmetic number, because the mean of its divisors is an integer number (1310778336).

Almost surely, 2^5242424021 is an apocalyptic number.

It is an amenable number.

5242424021 is a deficient number, since it is larger than the sum of its proper divisors (689323).

5242424021 is an equidigital number, since it uses as much as digits as its factorization.

5242424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689322.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 5242424021 is about 72404.5856351654. The cubic root of 5242424021 is about 1737.1769103095.

Adding to 5242424021 its reverse (1204242425), we get a palindrome (6446666446).

The spelling of 5242424021 in words is "five billion, two hundred forty-two million, four hundred twenty-four thousand, twenty-one".