2130420243 has 32 divisors (see below), whose sum is σ = 3362572800. Its totient is φ = 1173908736.

The previous prime is 2130420233. The next prime is 2130420283. The reversal of 2130420243 is 3420240312.

It is not a de Polignac number, because 2130420243 - 2⁸ = 2130419987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2130420233) 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 31 ways as a sum of consecutive naturals, for example, 618855 + ... + 622287.

It is an arithmetic number, because the mean of its divisors is an integer number (105080400).

Almost surely, 2^2130420243 is an apocalyptic number.

2130420243 is a deficient number, since it is larger than the sum of its proper divisors (1232152557).

2130420243 is a wasteful number, since it uses less digits than its factorization.

2130420243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491.

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

The square root of 2130420243 is about 46156.4756345196. The cubic root of 2130420243 is about 1286.7329630245.

Adding to 2130420243 its reverse (3420240312), we get a palindrome (5550660555).

The spelling of 2130420243 in words is "two billion, one hundred thirty million, four hundred twenty thousand, two hundred forty-three".