4320129 has 32 divisors (see below), whose sum is σ = 6709248. Its totient is φ = 2448000.

The previous prime is 4320119. The next prime is 4320187. The reversal of 4320129 is 9210234.

It is not a de Polignac number, because 4320129 - 2⁵ = 4320097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41892 + ... + 41994.

It is an arithmetic number, because the mean of its divisors is an integer number (209664).

Almost surely, 2^4320129 is an apocalyptic number.

It is an amenable number.

4320129 is a deficient number, since it is larger than the sum of its proper divisors (2389119).

4320129 is a wasteful number, since it uses less digits than its factorization.

4320129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 4320129 is about 2078.4920014280. The cubic root of 4320129 is about 162.8666780901.

Multiplying 4320129 by its sum of digits (21), we get a palindrome (90722709).

The spelling of 4320129 in words is "four million, three hundred twenty thousand, one hundred twenty-nine".