42223522 has 16 divisors (see below), whose sum is σ = 70779744. Its totient is φ = 18724000.

The previous prime is 42223513. The next prime is 42223523. The reversal of 42223522 is 22532224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 42223493 and 42223502.

It is not an unprimeable number, because it can be changed into a prime (42223523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22504 + ... + 24307.

It is an arithmetic number, because the mean of its divisors is an integer number (4423734).

Almost surely, 2^42223522 is an apocalyptic number.

42223522 is a deficient number, since it is larger than the sum of its proper divisors (28556222).

42223522 is a wasteful number, since it uses less digits than its factorization.

42223522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46865.

The product of its digits is 1920, while the sum is 22.

The square root of 42223522 is about 6497.9629115593. The cubic root of 42223522 is about 348.2182154084.

Adding to 42223522 its reverse (22532224), we get a palindrome (64755746).

It can be divided in two parts, 4222 and 3522, that added together give a square (7744 = 88²).

The spelling of 42223522 in words is "forty-two million, two hundred twenty-three thousand, five hundred twenty-two".