4239129 has 4 divisors (see below), whose sum is σ = 5652176. Its totient is φ = 2826084.

The previous prime is 4239121. The next prime is 4239149. The reversal of 4239129 is 9219324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4239129 - 2³ = 4239121 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

4239129 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4239096 and 4239105.

It is not an unprimeable number, because it can be changed into a prime (4239121) 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, 706519 + ... + 706524.

It is an arithmetic number, because the mean of its divisors is an integer number (1413044).

Almost surely, 2^4239129 is an apocalyptic number.

It is an amenable number.

4239129 is a deficient number, since it is larger than the sum of its proper divisors (1413047).

4239129 is a wasteful number, since it uses less digits than its factorization.

4239129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413046.

The product of its digits is 3888, while the sum is 30.

The square root of 4239129 is about 2058.9145198381. The cubic root of 4239129 is about 161.8423630430.

The spelling of 4239129 in words is "four million, two hundred thirty-nine thousand, one hundred twenty-nine".