22320440142 has 128 divisors (see below), whose sum is σ = 60759659520. Its totient is φ = 5278141440.

The previous prime is 22320440141. The next prime is 22320440161. The reversal of 22320440142 is 24104402322.

It is a super-3 number, since 3×22320440142³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320440141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 412984 + ... + 463892.

It is an arithmetic number, because the mean of its divisors is an integer number (474684840).

Almost surely, 2^22320440142 is an apocalyptic number.

22320440142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22320440142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30379829760).

22320440142 is an abundant number, since it is smaller than the sum of its proper divisors (38439219378).

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

22320440142 is a wasteful number, since it uses less digits than its factorization.

22320440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51018.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22320440142 its reverse (24104402322), we get a palindrome (46424842464).

The spelling of 22320440142 in words is "twenty-two billion, three hundred twenty million, four hundred forty thousand, one hundred forty-two".