144861147 has 6 divisors (see below), whose sum is σ = 209243892. Its totient is φ = 96574092.

The previous prime is 144861113. The next prime is 144861151. The reversal of 144861147 is 741168441.

It is not a de Polignac number, because 144861147 - 2⁶ = 144861083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144861247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8047833 + ... + 8047850.

It is an arithmetic number, because the mean of its divisors is an integer number (34873982).

Almost surely, 2^144861147 is an apocalyptic number.

144861147 is a deficient number, since it is larger than the sum of its proper divisors (64382745).

144861147 is a wasteful number, since it uses less digits than its factorization.

144861147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16095689 (or 16095686 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 144861147 is about 12035.8276408397. The cubic root of 144861147 is about 525.1910379593.

The spelling of 144861147 in words is "one hundred forty-four million, eight hundred sixty-one thousand, one hundred forty-seven".