144203845 has 4 divisors (see below), whose sum is σ = 173044620. Its totient is φ = 115363072.

The previous prime is 144203833. The next prime is 144203869. The reversal of 144203845 is 548302441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548302441 = 839 ⋅653519.

It can be written as a sum of positive squares in 2 ways, for example, as 16378209 + 127825636 = 4047^2 + 11306^2 .

It is a cyclic number.

It is not a de Polignac number, because 144203845 - 2²³ = 135815237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14420380 + ... + 14420389.

It is an arithmetic number, because the mean of its divisors is an integer number (43261155).

Almost surely, 2^144203845 is an apocalyptic number.

It is an amenable number.

144203845 is a deficient number, since it is larger than the sum of its proper divisors (28840775).

144203845 is an equidigital number, since it uses as much as digits as its factorization.

144203845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28840774.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 144203845 is about 12008.4905379486. The cubic root of 144203845 is about 524.3954886317.

The spelling of 144203845 in words is "one hundred forty-four million, two hundred three thousand, eight hundred forty-five".