4129280 has 40 divisors (see below), whose sum is σ = 9906732. Its totient is φ = 1650688.

The previous prime is 4129243. The next prime is 4129309. The reversal of 4129280 is 829214.

It can be written as a sum of positive squares in 2 ways, for example, as 4129024 + 256 = 2032^2 + 16^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754 + ... + 3366.

Almost surely, 2^4129280 is an apocalyptic number.

4129280 is a gapful number since it is divisible by the number (40) 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 4129280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4953366).

4129280 is an abundant number, since it is smaller than the sum of its proper divisors (5777452).

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

4129280 is an equidigital number, since it uses as much as digits as its factorization.

4129280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 4129280 is about 2032.0629911496. The cubic root of 4129280 is about 160.4321649912.

The spelling of 4129280 in words is "four million, one hundred twenty-nine thousand, two hundred eighty".