144542224 has 10 divisors (see below), whose sum is σ = 280050590. Its totient is φ = 72271104.

The previous prime is 144542191. The next prime is 144542273. The reversal of 144542224 is 422245441.

It can be written as a sum of positive squares in only one way, i.e., 134096400 + 10445824 = 11580^2 + 3232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144542192 and 144542201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4516929 + ... + 4516960.

It is an arithmetic number, because the mean of its divisors is an integer number (28005059).

Almost surely, 2^144542224 is an apocalyptic number.

It is an amenable number.

144542224 is a deficient number, since it is larger than the sum of its proper divisors (135508366).

144542224 is an equidigital number, since it uses as much as digits as its factorization.

144542224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9033897 (or 9033891 counting only the distinct ones).

The product of its digits is 10240, while the sum is 28.

The square root of 144542224 is about 12022.5714387564. The cubic root of 144542224 is about 524.8053385648.

Adding to 144542224 its reverse (422245441), we get a palindrome (566787665).

The spelling of 144542224 in words is "one hundred forty-four million, five hundred forty-two thousand, two hundred twenty-four".