4218039 has 48 divisors (see below), whose sum is σ = 7547904. Its totient is φ = 2217600.

The previous prime is 4218031. The next prime is 4218061. The reversal of 4218039 is 9308124.

It is not a de Polignac number, because 4218039 - 2³ = 4218031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4218031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59374 + ... + 59444.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

Almost surely, 2^4218039 is an apocalyptic number.

4218039 is a deficient number, since it is larger than the sum of its proper divisors (3329865).

4218039 is a wasteful number, since it uses less digits than its factorization.

4218039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4218039 is about 2053.7865030231. The cubic root of 4218039 is about 161.5735238909.

It can be divided in two parts, 42 and 18039, that added together give a palindrome (18081).

The spelling of 4218039 in words is "four million, two hundred eighteen thousand, thirty-nine".