144212004 has 18 divisors (see below), whose sum is σ = 364535990. Its totient is φ = 48070656.

The previous prime is 144211997. The next prime is 144212009. The reversal of 144212004 is 400212441.

It can be written as a sum of positive squares in only one way, i.e., 112402404 + 31809600 = 10602^2 + 5640^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 (144212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2002909 + ... + 2002980.

Almost surely, 2^144212004 is an apocalyptic number.

It is an amenable number.

144212004 is an abundant number, since it is smaller than the sum of its proper divisors (220323986).

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

144212004 is a wasteful number, since it uses less digits than its factorization.

144212004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005899 (or 4005894 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 144212004 is about 12008.8302511111. The cubic root of 144212004 is about 524.4053784792.

Adding to 144212004 its reverse (400212441), we get a palindrome (544424445).

The spelling of 144212004 in words is "one hundred forty-four million, two hundred twelve thousand, four".