144121330 has 16 divisors (see below), whose sum is σ = 261716184. Its totient is φ = 57137920.

The previous prime is 144121321. The next prime is 144121331. The reversal of 144121330 is 33121441.

It can be written as a sum of positive squares in 4 ways, for example, as 98545329 + 45576001 = 9927^2 + 6751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144121298 and 144121307.

It is not an unprimeable number, because it can be changed into a prime (144121331) 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, 62641 + ... + 64900.

Almost surely, 2^144121330 is an apocalyptic number.

144121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144121330 is a deficient number, since it is larger than the sum of its proper divisors (117594854).

144121330 is a wasteful number, since it uses less digits than its factorization.

144121330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127661.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 144121330 is about 12005.0543522301. The cubic root of 144121330 is about 524.2954479575.

Adding to 144121330 its reverse (33121441), we get a palindrome (177242771).

The spelling of 144121330 in words is "one hundred forty-four million, one hundred twenty-one thousand, three hundred thirty".