144066021 has 16 divisors (see below), whose sum is σ = 216311808. Its totient is φ = 84495600.

The previous prime is 144066017. The next prime is 144066047. The reversal of 144066021 is 120660441.

It is not a de Polignac number, because 144066021 - 2² = 144066017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144065982 and 144066000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144066061) 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 in 15 ways as a sum of consecutive naturals, for example, 69391 + ... + 71436.

It is an arithmetic number, because the mean of its divisors is an integer number (13519488).

Almost surely, 2^144066021 is an apocalyptic number.

144066021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144066021 is a deficient number, since it is larger than the sum of its proper divisors (72245787).

144066021 is a wasteful number, since it uses less digits than its factorization.

144066021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140872.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 144066021 is about 12002.7505597675. The cubic root of 144066021 is about 524.2283702916.

The spelling of 144066021 in words is "one hundred forty-four million, sixty-six thousand, twenty-one".