42000220 has 12 divisors (see below), whose sum is σ = 88200504. Its totient is φ = 16800080.

The previous prime is 42000199. The next prime is 42000247. The reversal of 42000220 is 2200024.

It is a happy number.

42000220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 42000197 and 42000206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049986 + ... + 1050025.

It is an arithmetic number, because the mean of its divisors is an integer number (7350042).

Almost surely, 2^42000220 is an apocalyptic number.

It is an amenable number.

42000220 is an abundant number, since it is smaller than the sum of its proper divisors (46200284).

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

42000220 is a wasteful number, since it uses less digits than its factorization.

42000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100020 (or 2100018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 42000220 is about 6480.7576717541. The cubic root of 42000220 is about 347.6032714129.

Adding to 42000220 its reverse (2200024), we get a palindrome (44200244).

The spelling of 42000220 in words is "forty-two million, two hundred twenty", and thus it is an aban number.