42045220 has 24 divisors (see below), whose sum is σ = 100908864. Its totient is φ = 14415456.

The previous prime is 42045217. The next prime is 42045239. The reversal of 42045220 is 2254024.

It is a super-3 number, since 3×42045220³ (a number of 24 digits) contains 333 as substring.

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, 150022 + ... + 150301.

It is an arithmetic number, because the mean of its divisors is an integer number (4204536).

Almost surely, 2^42045220 is an apocalyptic number.

It is an amenable number.

42045220 is an abundant number, since it is smaller than the sum of its proper divisors (58863644).

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

42045220 is a wasteful number, since it uses less digits than its factorization.

42045220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300339 (or 300337 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42045220 is about 6484.2285585874. The cubic root of 42045220 is about 347.7273704778.

Adding to 42045220 its reverse (2254024), we get a palindrome (44299244).

The spelling of 42045220 in words is "forty-two million, forty-five thousand, two hundred twenty".