123144723 has 18 divisors (see below), whose sum is σ = 192613356. Its totient is φ = 75780432.

The previous prime is 123144709. The next prime is 123144731. The reversal of 123144723 is 327441321.

It is a happy number.

It is not a de Polignac number, because 123144723 - 2²¹ = 121047571 is a prime.

It is a super-3 number, since 3×123144723³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123144773) 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 17 ways as a sum of consecutive naturals, for example, 38961 + ... + 42002.

It is an arithmetic number, because the mean of its divisors is an integer number (10700742).

Almost surely, 2^123144723 is an apocalyptic number.

123144723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123144723 is a deficient number, since it is larger than the sum of its proper divisors (69468633).

123144723 is a wasteful number, since it uses less digits than its factorization.

123144723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80995 (or 80979 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 123144723 is about 11097.0592050327. The cubic root of 123144723 is about 497.5139570001.

It can be divided in two parts, 1231 and 44723, that added together give a palindrome (45954).

The spelling of 123144723 in words is "one hundred twenty-three million, one hundred forty-four thousand, seven hundred twenty-three".