42216140 has 24 divisors (see below), whose sum is σ = 88907280. Its totient is φ = 16838208.

The previous prime is 42216133. The next prime is 42216173. The reversal of 42216140 is 4161224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4631 + ... + 10289.

It is an arithmetic number, because the mean of its divisors is an integer number (3704470).

Almost surely, 2^42216140 is an apocalyptic number.

It is an amenable number.

42216140 is an abundant number, since it is smaller than the sum of its proper divisors (46691140).

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

42216140 is a wasteful number, since it uses less digits than its factorization.

42216140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041 (or 6039 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 42216140 is about 6497.3948625584. The cubic root of 42216140 is about 348.1979210593.

Adding to 42216140 its reverse (4161224), we get a palindrome (46377364).

The spelling of 42216140 in words is "forty-two million, two hundred sixteen thousand, one hundred forty".