2130021420 has 48 divisors (see below), whose sum is σ = 5976096000. Its totient is φ = 566859456.

The previous prime is 2130021407. The next prime is 2130021437. The reversal of 2130021420 is 241200312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2130021420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5632 + ... + 65511.

It is an arithmetic number, because the mean of its divisors is an integer number (124502000).

Almost surely, 2^2130021420 is an apocalyptic number.

2130021420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130021420 is an abundant number, since it is smaller than the sum of its proper divisors (3846074580).

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

2130021420 is a wasteful number, since it uses less digits than its factorization.

2130021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71654 (or 71652 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2130021420 is about 46152.1550959432. The cubic root of 2130021420 is about 1286.6526641995.

Adding to 2130021420 its reverse (241200312), we get a palindrome (2371221732).

The spelling of 2130021420 in words is "two billion, one hundred thirty million, twenty-one thousand, four hundred twenty".