144023457 has 4 divisors (see below), whose sum is σ = 192031280. Its totient is φ = 96015636.

The previous prime is 144023443. The next prime is 144023491. The reversal of 144023457 is 754320441.

144023457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 144023457 - 2⁴ = 144023441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144023417) 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, 24003907 + ... + 24003912.

It is an arithmetic number, because the mean of its divisors is an integer number (48007820).

Almost surely, 2^144023457 is an apocalyptic number.

It is an amenable number.

144023457 is a deficient number, since it is larger than the sum of its proper divisors (48007823).

144023457 is an equidigital number, since it uses as much as digits as its factorization.

144023457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48007822.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 144023457 is about 12000.9773352007. The cubic root of 144023457 is about 524.1767378201.

Adding to 144023457 its reverse (754320441), we get a palindrome (898343898).

The spelling of 144023457 in words is "one hundred forty-four million, twenty-three thousand, four hundred fifty-seven".