123003145 has 8 divisors (see below), whose sum is σ = 150023880. Its totient is φ = 96789120.

The previous prime is 123003061. The next prime is 123003217. The reversal of 123003145 is 541300321.

It can be written as a sum of positive squares in 4 ways, for example, as 18636489 + 104366656 = 4317^2 + 10216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123003145 - 2¹³ = 122994953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201340 + ... + 201949.

It is an arithmetic number, because the mean of its divisors is an integer number (18752985).

Almost surely, 2^123003145 is an apocalyptic number.

It is an amenable number.

123003145 is a deficient number, since it is larger than the sum of its proper divisors (27020735).

123003145 is an equidigital number, since it uses as much as digits as its factorization.

123003145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403355.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 123003145 is about 11090.6782930531. The cubic root of 123003145 is about 497.3232219579.

Adding to 123003145 its reverse (541300321), we get a palindrome (664303466).

The spelling of 123003145 in words is "one hundred twenty-three million, three thousand, one hundred forty-five".