144021243 has 8 divisors (see below), whose sum is σ = 192444928. Its totient is φ = 95805864.

The previous prime is 144021209. The next prime is 144021277. The reversal of 144021243 is 342120441.

It is an interprime number because it is at equal distance from previous prime (144021209) and next prime (144021277).

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

It is not a de Polignac number, because 144021243 - 2⁶ = 144021179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144021203) 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, 50455 + ... + 53232.

It is an arithmetic number, because the mean of its divisors is an integer number (24055616).

Almost surely, 2^144021243 is an apocalyptic number.

144021243 is a deficient number, since it is larger than the sum of its proper divisors (48423685).

144021243 is a wasteful number, since it uses less digits than its factorization.

144021243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104153.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144021243 is about 12000.8850923588. The cubic root of 144021243 is about 524.1740518381.

Adding to 144021243 its reverse (342120441), we get a palindrome (486141684).

The spelling of 144021243 in words is "one hundred forty-four million, twenty-one thousand, two hundred forty-three".