144121104 has 120 divisors (see below), whose sum is σ = 431671032. Its totient is φ = 44728320.

The previous prime is 144121093. The next prime is 144121141. The reversal of 144121104 is 401121441.

It can be written as a sum of positive squares in 4 ways, for example, as 1557504 + 142563600 = 1248^2 + 11940^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276364 + ... + 276884.

Almost surely, 2^144121104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144121104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215835516).

144121104 is an abundant number, since it is smaller than the sum of its proper divisors (287549928).

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

144121104 is a wasteful number, since it uses less digits than its factorization.

144121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 144121104 is about 12005.0449395244. The cubic root of 144121104 is about 524.2951739041.

Adding to 144121104 its reverse (401121441), we get a palindrome (545242545).

It can be divided in two parts, 144 and 121104, that multiplied together give a square (17438976 = 4176²).

The spelling of 144121104 in words is "one hundred forty-four million, one hundred twenty-one thousand, one hundred four".