144885434 has 4 divisors (see below), whose sum is σ = 217328154. Its totient is φ = 72442716.

The previous prime is 144885427. The next prime is 144885439. The reversal of 144885434 is 434588441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108222409 + 36663025 = 10403^2 + 6055^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144885391 and 144885400.

It is not an unprimeable number, because it can be changed into a prime (144885439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36221357 + ... + 36221360.

Almost surely, 2^144885434 is an apocalyptic number.

144885434 is a deficient number, since it is larger than the sum of its proper divisors (72442720).

144885434 is an equidigital number, since it uses as much as digits as its factorization.

144885434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72442719.

The product of its digits is 245760, while the sum is 41.

The square root of 144885434 is about 12036.8365445411. The cubic root of 144885434 is about 525.2203869882.

The spelling of 144885434 in words is "one hundred forty-four million, eight hundred eighty-five thousand, four hundred thirty-four".