144885921 has 8 divisors (see below), whose sum is σ = 195626880. Its totient is φ = 95367792.

The previous prime is 144885907. The next prime is 144885991. The reversal of 144885921 is 129588441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144885921 - 2⁵ = 144885889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144885991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305430 + ... + 305903.

It is an arithmetic number, because the mean of its divisors is an integer number (24453360).

Almost surely, 2^144885921 is an apocalyptic number.

It is an amenable number.

144885921 is a deficient number, since it is larger than the sum of its proper divisors (50740959).

144885921 is an equidigital number, since it uses as much as digits as its factorization.

144885921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611415.

The product of its digits is 92160, while the sum is 42.

The square root of 144885921 is about 12036.8567740918. The cubic root of 144885921 is about 525.2209754579.

The spelling of 144885921 in words is "one hundred forty-four million, eight hundred eighty-five thousand, nine hundred twenty-one".