42418243 has 16 divisors (see below), whose sum is σ = 50099200. Its totient is φ = 35155296.

The previous prime is 42418219. The next prime is 42418267. The reversal of 42418243 is 34281424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42418219) and next prime (42418267).

It is a cyclic number.

It is not a de Polignac number, because 42418243 - 2¹³ = 42410051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42418273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51130 + ... + 51952.

It is an arithmetic number, because the mean of its divisors is an integer number (3131200).

Almost surely, 2^42418243 is an apocalyptic number.

42418243 is a deficient number, since it is larger than the sum of its proper divisors (7680957).

42418243 is a wasteful number, since it uses less digits than its factorization.

42418243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its digits is 6144, while the sum is 28.

The square root of 42418243 is about 6512.9289110200. The cubic root of 42418243 is about 348.7526839548.

Adding to 42418243 its reverse (34281424), we get a palindrome (76699667).

The spelling of 42418243 in words is "forty-two million, four hundred eighteen thousand, two hundred forty-three".