3020421421 has 4 divisors (see below), whose sum is σ = 3039659932. Its totient is φ = 3001182912.

The previous prime is 3020421413. The next prime is 3020421451. The reversal of 3020421421 is 1241240203.

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 351562500 + 2668858921 = 18750^2 + 51661^2 .

It is a cyclic number.

It is not a de Polignac number, because 3020421421 - 2³ = 3020421413 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 (3020421451) 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, 9619020 + ... + 9619333.

It is an arithmetic number, because the mean of its divisors is an integer number (759914983).

Almost surely, 2^3020421421 is an apocalyptic number.

It is an amenable number.

3020421421 is a deficient number, since it is larger than the sum of its proper divisors (19238511).

3020421421 is a wasteful number, since it uses less digits than its factorization.

3020421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19238510.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3020421421 is about 54958.3607925127. The cubic root of 3020421421 is about 1445.5147044747.

Adding to 3020421421 its reverse (1241240203), we get a palindrome (4261661624).

The spelling of 3020421421 in words is "three billion, twenty million, four hundred twenty-one thousand, four hundred twenty-one".