123003073 has 4 divisors (see below), whose sum is σ = 124385220. Its totient is φ = 121620928.

The previous prime is 123003061. The next prime is 123003217. The reversal of 123003073 is 370300321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78287104 + 44715969 = 8848^2 + 6687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123003073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123003073.

It is not an unprimeable number, because it can be changed into a prime (123003973) 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, 690940 + ... + 691117.

It is an arithmetic number, because the mean of its divisors is an integer number (31096305).

Almost surely, 2^123003073 is an apocalyptic number.

It is an amenable number.

123003073 is a deficient number, since it is larger than the sum of its proper divisors (1382147).

123003073 is an equidigital number, since it uses as much as digits as its factorization.

123003073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382146.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 123003073 is about 11090.6750470835. The cubic root of 123003073 is about 497.3231249217.

Adding to 123003073 its reverse (370300321), we get a palindrome (493303394).

The spelling of 123003073 in words is "one hundred twenty-three million, three thousand, seventy-three".