30420321420 has 96 divisors (see below), whose sum is σ = 85501172736. Its totient is φ = 8081280000.

The previous prime is 30420321367. The next prime is 30420321427. The reversal of 30420321420 is 2412302403.

It is a super-2 number, since 2×30420321420² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30420321427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31135972 + ... + 31136948.

It is an arithmetic number, because the mean of its divisors is an integer number (890637216).

Almost surely, 2^30420321420 is an apocalyptic number.

30420321420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30420321420 is an abundant number, since it is smaller than the sum of its proper divisors (55080851316).

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

30420321420 is a wasteful number, since it uses less digits than its factorization.

30420321420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 30420321420 its reverse (2412302403), we get a palindrome (32832623823).

The spelling of 30420321420 in words is "thirty billion, four hundred twenty million, three hundred twenty-one thousand, four hundred twenty".