145004123 has 16 divisors (see below), whose sum is σ = 161568000. Its totient is φ = 129024480.

The previous prime is 145004113. The next prime is 145004129. The reversal of 145004123 is 321400541.

It is a cyclic number.

It is not a de Polignac number, because 145004123 - 2⁶ = 145004059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145004095 and 145004104.

It is not an unprimeable number, because it can be changed into a prime (145004129) 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, 241778 + ... + 242376.

It is an arithmetic number, because the mean of its divisors is an integer number (10098000).

Almost surely, 2^145004123 is an apocalyptic number.

145004123 is a deficient number, since it is larger than the sum of its proper divisors (16563877).

145004123 is a wasteful number, since it uses less digits than its factorization.

145004123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 145004123 is about 12041.7657758320. The cubic root of 145004123 is about 525.3637666372.

Adding to 145004123 its reverse (321400541), we get a palindrome (466404664).

The spelling of 145004123 in words is "one hundred forty-five million, four thousand, one hundred twenty-three".