2130420073 has 2 divisors, whose sum is σ = 2130420074. Its totient is φ = 2130420072.

The previous prime is 2130420041. The next prime is 2130420109. The reversal of 2130420073 is 3700240312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2069158144 + 61261929 = 45488^2 + 7827^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130420073 - 2⁵ = 2130420041 is a prime.

It is not a weakly prime, because it can be changed into another prime (2130420023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065210036 + 1065210037.

It is an arithmetic number, because the mean of its divisors is an integer number (1065210037).

Almost surely, 2^2130420073 is an apocalyptic number.

It is an amenable number.

2130420073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130420073 is an equidigital number, since it uses as much as digits as its factorization.

2130420073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 2130420073 is about 46156.4737929578. The cubic root of 2130420073 is about 1286.7329287990.

Adding to 2130420073 its reverse (3700240312), we get a palindrome (5830660385).

The spelling of 2130420073 in words is "two billion, one hundred thirty million, four hundred twenty thousand, seventy-three".