144221130 has 48 divisors (see below), whose sum is σ = 375621480. Its totient is φ = 38392704.

The previous prime is 144221117. The next prime is 144221131. The reversal of 144221130 is 31122441.

It can be written as a sum of positive squares in 4 ways, for example, as 128799801 + 15421329 = 11349^2 + 3927^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (144221131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73644 + ... + 75576.

Almost surely, 2^144221130 is an apocalyptic number.

144221130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144221130 is an abundant number, since it is smaller than the sum of its proper divisors (231400350).

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

144221130 is a wasteful number, since it uses less digits than its factorization.

144221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775 (or 2772 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 144221130 is about 12009.2102154971. The cubic root of 144221130 is about 524.4164400238.

Adding to 144221130 its reverse (31122441), we get a palindrome (175343571).

The spelling of 144221130 in words is "one hundred forty-four million, two hundred twenty-one thousand, one hundred thirty".