123023144 has 8 divisors (see below), whose sum is σ = 230668410. Its totient is φ = 61511568.

The previous prime is 123023141. The next prime is 123023149. The reversal of 123023144 is 441320321.

It can be written as a sum of positive squares in only one way, i.e., 105062500 + 17960644 = 10250^2 + 4238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (123023141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7688939 + ... + 7688954.

Almost surely, 2^123023144 is an apocalyptic number.

It is an amenable number.

123023144 is a deficient number, since it is larger than the sum of its proper divisors (107645266).

123023144 is a wasteful number, since it uses less digits than its factorization.

123023144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15377899 (or 15377895 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123023144 is about 11091.5798694325. The cubic root of 123023144 is about 497.3501736486.

Adding to 123023144 its reverse (441320321), we get a palindrome (564343465).

The spelling of 123023144 in words is "one hundred twenty-three million, twenty-three thousand, one hundred forty-four".