144222340 has 24 divisors (see below), whose sum is σ = 304176600. Its totient is φ = 57439488.

The previous prime is 144222329. The next prime is 144222347. The reversal of 144222340 is 43222441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27625536 + 116596804 = 5256^2 + 10798^2 .

It is not an unprimeable number, because it can be changed into a prime (144222347) 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, 10815 + ... + 20134.

It is an arithmetic number, because the mean of its divisors is an integer number (12674025).

Almost surely, 2^144222340 is an apocalyptic number.

144222340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144222340 is an abundant number, since it is smaller than the sum of its proper divisors (159954260).

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

144222340 is a wasteful number, since it uses less digits than its factorization.

144222340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31191 (or 31189 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 144222340 is about 12009.2605933921. The cubic root of 144222340 is about 524.4179066192.

Adding to 144222340 its reverse (43222441), we get a palindrome (187444781).

The spelling of 144222340 in words is "one hundred forty-four million, two hundred twenty-two thousand, three hundred forty".