4218534 has 16 divisors (see below), whose sum is σ = 9374640. Its totient is φ = 1406160.

The previous prime is 4218517. The next prime is 4218541. The reversal of 4218534 is 4358124.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4218498 and 4218507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39007 + ... + 39114.

It is an arithmetic number, because the mean of its divisors is an integer number (585915).

Almost surely, 2^4218534 is an apocalyptic number.

4218534 is an abundant number, since it is smaller than the sum of its proper divisors (5156106).

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

4218534 is a wasteful number, since it uses less digits than its factorization.

4218534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78132 (or 78126 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 4218534 is about 2053.9070086058. The cubic root of 4218534 is about 161.5798440289.

The spelling of 4218534 in words is "four million, two hundred eighteen thousand, five hundred thirty-four".