144854021 has 4 divisors (see below), whose sum is σ = 155996652. Its totient is φ = 133711392.

The previous prime is 144854011. The next prime is 144854051. The reversal of 144854021 is 120458441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79405921 + 65448100 = 8911^2 + 8090^2 .

It is a cyclic number.

It is not a de Polignac number, because 144854021 - 2¹⁰ = 144852997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144854011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5571296 + ... + 5571321.

It is an arithmetic number, because the mean of its divisors is an integer number (38999163).

Almost surely, 2^144854021 is an apocalyptic number.

It is an amenable number.

144854021 is a deficient number, since it is larger than the sum of its proper divisors (11142631).

144854021 is a wasteful number, since it uses less digits than its factorization.

144854021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11142630.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 144854021 is about 12035.5316043788. The cubic root of 144854021 is about 525.1824260971.

The spelling of 144854021 in words is "one hundred forty-four million, eight hundred fifty-four thousand, twenty-one".