42018814 has 4 divisors (see below), whose sum is σ = 63028224. Its totient is φ = 21009406.

The previous prime is 42018811. The next prime is 42018817. The reversal of 42018814 is 41881024.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42018811) and next prime (42018817).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42018811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10504702 + ... + 10504705.

It is an arithmetic number, because the mean of its divisors is an integer number (15757056).

Almost surely, 2^42018814 is an apocalyptic number.

42018814 is a deficient number, since it is larger than the sum of its proper divisors (21009410).

42018814 is a wasteful number, since it uses less digits than its factorization.

42018814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21009409.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 42018814 is about 6482.1920675031. The cubic root of 42018814 is about 347.6545598876.

Adding to 42018814 its reverse (41881024), we get a palindrome (83899838).

The spelling of 42018814 in words is "forty-two million, eighteen thousand, eight hundred fourteen".