144220423 has 4 divisors (see below), whose sum is σ = 145258120. Its totient is φ = 143182728.

The previous prime is 144220403. The next prime is 144220429. The reversal of 144220423 is 324022441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324022441 = 10399 ⋅31159.

It is a cyclic number.

It is not a de Polignac number, because 144220423 - 2²⁵ = 110665991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144220394 and 144220403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144220429) 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, 518640 + ... + 518917.

It is an arithmetic number, because the mean of its divisors is an integer number (36314530).

Almost surely, 2^144220423 is an apocalyptic number.

144220423 is a deficient number, since it is larger than the sum of its proper divisors (1037697).

144220423 is a wasteful number, since it uses less digits than its factorization.

144220423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037696.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 144220423 is about 12009.1807797202. The cubic root of 144220423 is about 524.4155830920.

Adding to 144220423 its reverse (324022441), we get a palindrome (468242864).

The spelling of 144220423 in words is "one hundred forty-four million, two hundred twenty thousand, four hundred twenty-three".