144111402 has 24 divisors (see below), whose sum is σ = 317362500. Its totient is φ = 47249280.

The previous prime is 144111391. The next prime is 144111403. The reversal of 144111402 is 204111441.

It can be written as a sum of positive squares in 2 ways, for example, as 129754881 + 14356521 = 11391^2 + 3789^2 .

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 (144111403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64527 + ... + 66722.

Almost surely, 2^144111402 is an apocalyptic number.

144111402 is an abundant number, since it is smaller than the sum of its proper divisors (173251098).

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

144111402 is a wasteful number, since it uses less digits than its factorization.

144111402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131318 (or 131315 counting only the distinct ones).

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

The square root of 144111402 is about 12004.6408526036. The cubic root of 144111402 is about 524.2834087386.

Adding to 144111402 its reverse (204111441), we get a palindrome (348222843).

The spelling of 144111402 in words is "one hundred forty-four million, one hundred eleven thousand, four hundred two".