42231216 has 20 divisors (see below), whose sum is σ = 109097432. Its totient is φ = 14077056.

The previous prime is 42231191. The next prime is 42231223. The reversal of 42231216 is 61213224.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 42231192 and 42231201.

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, 439861 + ... + 439956.

Almost surely, 2^42231216 is an apocalyptic number.

It is an amenable number.

42231216 is an abundant number, since it is smaller than the sum of its proper divisors (66866216).

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

42231216 is a wasteful number, since it uses less digits than its factorization.

42231216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879828 (or 879822 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 42231216 is about 6498.5549162872. The cubic root of 42231216 is about 348.2393649802.

The spelling of 42231216 in words is "forty-two million, two hundred thirty-one thousand, two hundred sixteen".