42218535 has 8 divisors (see below), whose sum is σ = 67549680. Its totient is φ = 22516544.

The previous prime is 42218507. The next prime is 42218537. The reversal of 42218535 is 53581224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42218535 - 2¹¹ = 42216487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42218537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407270 + ... + 1407299.

It is an arithmetic number, because the mean of its divisors is an integer number (8443710).

Almost surely, 2^42218535 is an apocalyptic number.

42218535 is a deficient number, since it is larger than the sum of its proper divisors (25331145).

42218535 is a wasteful number, since it uses less digits than its factorization.

42218535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814577.

The product of its digits is 9600, while the sum is 30.

The square root of 42218535 is about 6497.5791645812. The cubic root of 42218535 is about 348.2045055730.

Adding to 42218535 its reverse (53581224), we get a palindrome (95799759).

It can be divided in two parts, 42 and 218535, that multiplied together give a triangular number (9178470 = T₄₂₈₄).

The spelling of 42218535 in words is "forty-two million, two hundred eighteen thousand, five hundred thirty-five".