2122430420 has 24 divisors (see below), whose sum is σ = 4862295648. Its totient is φ = 771792800.

The previous prime is 2122430417. The next prime is 2122430447. The reversal of 2122430420 is 240342212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2122430392 and 2122430401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4823486 + ... + 4823925.

It is an arithmetic number, because the mean of its divisors is an integer number (202595652).

Almost surely, 2^2122430420 is an apocalyptic number.

2122430420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122430420 is an abundant number, since it is smaller than the sum of its proper divisors (2739865228).

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

2122430420 is a wasteful number, since it uses less digits than its factorization.

2122430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647431 (or 9647429 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2122430420 is about 46069.8428475722. The cubic root of 2122430420 is about 1285.1223813151.

Adding to 2122430420 its reverse (240342212), we get a palindrome (2362772632).

The spelling of 2122430420 in words is "two billion, one hundred twenty-two million, four hundred thirty thousand, four hundred twenty".