2120013420 has 144 divisors (see below), whose sum is σ = 7092177120. Its totient is φ = 471453696.

The previous prime is 2120013377. The next prime is 2120013421. The reversal of 2120013420 is 243100212.

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 2120013420.

It is not an unprimeable number, because it can be changed into a prime (2120013421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99036 + ... + 118524.

It is an arithmetic number, because the mean of its divisors is an integer number (49251230).

Almost surely, 2^2120013420 is an apocalyptic number.

2120013420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120013420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3546088560).

2120013420 is an abundant number, since it is smaller than the sum of its proper divisors (4972163700).

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

2120013420 is a wasteful number, since it uses less digits than its factorization.

2120013420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19552 (or 19543 counting only the distinct ones).

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

The square root of 2120013420 is about 46043.6034645422. The cubic root of 2120013420 is about 1284.6343683603.

Adding to 2120013420 its reverse (243100212), we get a palindrome (2363113632).

The spelling of 2120013420 in words is "two billion, one hundred twenty million, thirteen thousand, four hundred twenty".