42041220 has 48 divisors (see below), whose sum is σ = 126772800. Its totient is φ = 10348416.

The previous prime is 42041183. The next prime is 42041231. The reversal of 42041220 is 2214024.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 42041220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26170 + ... + 27729.

It is an arithmetic number, because the mean of its divisors is an integer number (2641100).

Almost surely, 2^42041220 is an apocalyptic number.

It is an amenable number.

42041220 is an abundant number, since it is smaller than the sum of its proper divisors (84731580).

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

42041220 is a wasteful number, since it uses less digits than its factorization.

42041220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53924 (or 53922 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42041220 is about 6483.9201105504. The cubic root of 42041220 is about 347.7163430364.

Adding to 42041220 its reverse (2214024), we get a palindrome (44255244).

The spelling of 42041220 in words is "forty-two million, forty-one thousand, two hundred twenty".