42222500 has 30 divisors (see below), whose sum is σ = 92337630. Its totient is φ = 16888000.

The previous prime is 42222487. The next prime is 42222533. The reversal of 42222500 is 522224.

It can be written as a sum of positive squares in 5 ways, for example, as 28987456 + 13235044 = 5384^2 + 3638^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5945 + ... + 10944.

It is an arithmetic number, because the mean of its divisors is an integer number (3077921).

Almost surely, 2^42222500 is an apocalyptic number.

It is an amenable number.

42222500 is an abundant number, since it is smaller than the sum of its proper divisors (50115130).

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

42222500 is a wasteful number, since it uses less digits than its factorization.

42222500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16913 (or 16896 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 42222500 is about 6497.8842710532. The cubic root of 42222500 is about 348.2154059010.

Adding to 42222500 its reverse (522224), we get a palindrome (42744724).

It can be divided in two parts, 422 and 22500, that added together give a palindrome (22922).

The spelling of 42222500 in words is "forty-two million, two hundred twenty-two thousand, five hundred".