5122420421 has 8 divisors (see below), whose sum is σ = 5154401304. Its totient is φ = 5090525440.

The previous prime is 5122420397. The next prime is 5122420427. The reversal of 5122420421 is 1240242215.

It can be written as a sum of positive squares in 4 ways, for example, as 65788321 + 5056632100 = 8111^2 + 71110^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5122420421 - 2²² = 5118226117 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 (5122420427) 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 7 ways as a sum of consecutive naturals, for example, 100295 + ... + 142491.

It is an arithmetic number, because the mean of its divisors is an integer number (644300163).

Almost surely, 2^5122420421 is an apocalyptic number.

It is an amenable number.

5122420421 is a deficient number, since it is larger than the sum of its proper divisors (31980883).

5122420421 is a wasteful number, since it uses less digits than its factorization.

5122420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42951.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 5122420421 is about 71571.0864874916. The cubic root of 5122420421 is about 1723.8193050183.

Adding to 5122420421 its reverse (1240242215), we get a palindrome (6362662636).

The spelling of 5122420421 in words is "five billion, one hundred twenty-two million, four hundred twenty thousand, four hundred twenty-one".