42818216 has 16 divisors (see below), whose sum is σ = 91753440. Its totient is φ = 18350640.

The previous prime is 42818207. The next prime is 42818231. The reversal of 42818216 is 61281824.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382250 + ... + 382361.

It is an arithmetic number, because the mean of its divisors is an integer number (5734590).

Almost surely, 2^42818216 is an apocalyptic number.

It is an amenable number.

42818216 is an abundant number, since it is smaller than the sum of its proper divisors (48935224).

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

42818216 is a wasteful number, since it uses less digits than its factorization.

42818216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764624 (or 764620 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 42818216 is about 6543.5629438403. The cubic root of 42818216 is about 349.8454174507.

It can be divided in two parts, 42818 and 216, that added together give a palindrome (43034).

The spelling of 42818216 in words is "forty-two million, eight hundred eighteen thousand, two hundred sixteen".