145244123 has 4 divisors (see below), whose sum is σ = 145761288. Its totient is φ = 144726960.

The previous prime is 145244101. The next prime is 145244159. The reversal of 145244123 is 321442541.

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

It is a cyclic number.

It is not a de Polignac number, because 145244123 - 2⁶ = 145244059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145244092 and 145244101.

It is not an unprimeable number, because it can be changed into a prime (145241123) 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, 258161 + ... + 258722.

It is an arithmetic number, because the mean of its divisors is an integer number (36440322).

Almost surely, 2^145244123 is an apocalyptic number.

145244123 is a deficient number, since it is larger than the sum of its proper divisors (517165).

145244123 is an equidigital number, since it uses as much as digits as its factorization.

145244123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517164.

The product of its digits is 3840, while the sum is 26.

The square root of 145244123 is about 12051.7269716834. The cubic root of 145244123 is about 525.6534545023.

Adding to 145244123 its reverse (321442541), we get a palindrome (466686664).

The spelling of 145244123 in words is "one hundred forty-five million, two hundred forty-four thousand, one hundred twenty-three".