4128029 has 4 divisors (see below), whose sum is σ = 4170684. Its totient is φ = 4085376.

The previous prime is 4128023. The next prime is 4128031. The reversal of 4128029 is 9208214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3276100 + 851929 = 1810^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 4128029 - 2⁴ = 4128013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4127989 and 4128007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21182 + ... + 21375.

It is an arithmetic number, because the mean of its divisors is an integer number (1042671).

Almost surely, 2^4128029 is an apocalyptic number.

It is an amenable number.

4128029 is a deficient number, since it is larger than the sum of its proper divisors (42655).

4128029 is an equidigital number, since it uses as much as digits as its factorization.

4128029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42654.

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

The square root of 4128029 is about 2031.7551525713. The cubic root of 4128029 is about 160.4159619317.

The spelling of 4128029 in words is "four million, one hundred twenty-eight thousand, twenty-nine".