42223780 has 12 divisors (see below), whose sum is σ = 88669980. Its totient is φ = 16889504.

The previous prime is 42223759. The next prime is 42223781. The reversal of 42223780 is 8732224.

It can be written as a sum of positive squares in 2 ways, for example, as 5354596 + 36869184 = 2314^2 + 6072^2 .

It is not an unprimeable number, because it can be changed into a prime (42223781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055575 + ... + 1055614.

It is an arithmetic number, because the mean of its divisors is an integer number (7389165).

Almost surely, 2^42223780 is an apocalyptic number.

It is an amenable number.

42223780 is an abundant number, since it is smaller than the sum of its proper divisors (46446200).

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

42223780 is a wasteful number, since it uses less digits than its factorization.

42223780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111198 (or 2111196 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42223780 is about 6497.9827639045. The cubic root of 42223780 is about 348.2189246506.

The spelling of 42223780 in words is "forty-two million, two hundred twenty-three thousand, seven hundred eighty".