30420310421 has 2 divisors, whose sum is σ = 30420310422. Its totient is φ = 30420310420.

The previous prime is 30420310331. The next prime is 30420310441. The reversal of 30420310421 is 12401302403.

It is an a-pointer prime, because the next prime (30420310441) can be obtained adding 30420310421 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17557575025 + 12862735396 = 132505^2 + 113414^2 .

It is a cyclic number.

It is not a de Polignac number, because 30420310421 - 2³⁴ = 13240441237 is a prime.

It is a super-2 number, since 2×30420310421² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30420310393 and 30420310402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30420310441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210155210 + 15210155211.

It is an arithmetic number, because the mean of its divisors is an integer number (15210155211).

Almost surely, 2^30420310421 is an apocalyptic number.

It is an amenable number.

30420310421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30420310421 is an equidigital number, since it uses as much as digits as its factorization.

30420310421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30420310421 its reverse (12401302403), we get a palindrome (42821612824).

The spelling of 30420310421 in words is "thirty billion, four hundred twenty million, three hundred ten thousand, four hundred twenty-one".