2130129 has 6 divisors (see below), whose sum is σ = 3076866. Its totient is φ = 1420080.

The previous prime is 2130101. The next prime is 2130133. The reversal of 2130129 is 9210312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 725904 = 1185^2 + 852^2 .

It is not a de Polignac number, because 2130129 - 2⁷ = 2130001 is a prime.

It is a Curzon number.

2130129 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118332 + ... + 118349.

It is an arithmetic number, because the mean of its divisors is an integer number (512811).

2^2130129 is an apocalyptic number.

It is an amenable number.

2130129 is a deficient number, since it is larger than the sum of its proper divisors (946737).

2130129 is a wasteful number, since it uses less digits than its factorization.

2130129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236687 (or 236684 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2130129 is about 1459.4961459353. The cubic root of 2130129 is about 128.6674325291.

The spelling of 2130129 in words is "two million, one hundred thirty thousand, one hundred twenty-nine".