30420430420 has 48 divisors (see below), whose sum is σ = 64058234688. Its totient is φ = 12134833920.

The previous prime is 30420430387. The next prime is 30420430423. The reversal of 30420430420 is 2403402403.

It is a super-2 number, since 2×30420430420² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30420430391 and 30420430400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420430423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17675160 + ... + 17676880.

It is an arithmetic number, because the mean of its divisors is an integer number (1334546556).

Almost surely, 2^30420430420 is an apocalyptic number.

It is an amenable number.

30420430420 is an abundant number, since it is smaller than the sum of its proper divisors (33637804268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30420430420 is a wasteful number, since it uses less digits than its factorization.

30420430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 30420430420 its reverse (2403402403), we get a palindrome (32823832823).

The spelling of 30420430420 in words is "thirty billion, four hundred twenty million, four hundred thirty thousand, four hundred twenty".