42026220 has 144 divisors (see below), whose sum is σ = 134840160. Its totient is φ = 10579968.

The previous prime is 42026167. The next prime is 42026251. The reversal of 42026220 is 2262024.

It is a happy number.

42026220 is a `hidden beast` number, since 42 + 0 + 2 + 622 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42026193 and 42026202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 433212 + ... + 433308.

It is an arithmetic number, because the mean of its divisors is an integer number (936390).

Almost surely, 2^42026220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42026220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67420080).

42026220 is an abundant number, since it is smaller than the sum of its proper divisors (92813940).

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

42026220 is a wasteful number, since it uses less digits than its factorization.

42026220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42026220 is about 6482.7632997048. The cubic root of 42026220 is about 347.6749839006.

Adding to 42026220 its reverse (2262024), we get a palindrome (44288244).

The spelling of 42026220 in words is "forty-two million, twenty-six thousand, two hundred twenty".