220523442 has 16 divisors (see below), whose sum is σ = 443265600. Its totient is φ = 73138032.

The previous prime is 220523423. The next prime is 220523449. The reversal of 220523442 is 244325022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220523449) 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, 91153 + ... + 93540.

It is an arithmetic number, because the mean of its divisors is an integer number (27704100).

Almost surely, 2^220523442 is an apocalyptic number.

220523442 is an abundant number, since it is smaller than the sum of its proper divisors (222742158).

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

220523442 is a wasteful number, since it uses less digits than its factorization.

220523442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184897.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 220523442 is about 14850.0317171378. The cubic root of 220523442 is about 604.1594702676.

Adding to 220523442 its reverse (244325022), we get a palindrome (464848464).

The spelling of 220523442 in words is "two hundred twenty million, five hundred twenty-three thousand, four hundred forty-two".