42341220 has 144 divisors (see below), whose sum is σ = 138338928. Its totient is φ = 10444800.

The previous prime is 42341171. The next prime is 42341227. The reversal of 42341220 is 2214324.

It can be written as a sum of positive squares in 8 ways, for example, as 6843456 + 35497764 = 2616^2 + 5958^2 .

It is a super-2 number, since 2×42341220² = 3585557822176800, which contains 22 as substring.

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 = 42341193 and 42341202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42341227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 308992 + ... + 309128.

It is an arithmetic number, because the mean of its divisors is an integer number (960687).

Almost surely, 2^42341220 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 42341220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69169464).

42341220 is an abundant number, since it is smaller than the sum of its proper divisors (95997708).

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

42341220 is a wasteful number, since it uses less digits than its factorization.

42341220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 265 counting only the distinct ones).

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

The square root of 42341220 is about 6507.0131396824. The cubic root of 42341220 is about 348.5414678117.

Adding to 42341220 its reverse (2214324), we get a palindrome (44555544).

The spelling of 42341220 in words is "forty-two million, three hundred forty-one thousand, two hundred twenty".