123120003 has 8 divisors (see below), whose sum is σ = 169455616. Its totient is φ = 79432200.

The previous prime is 123119963. The next prime is 123120013. The reversal of 123120003 is 300021321.

It is a happy number.

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

It is not a de Polignac number, because 123120003 - 2⁶ = 123119939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123120013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661843 + ... + 662028.

It is an arithmetic number, because the mean of its divisors is an integer number (21181952).

Almost surely, 2^123120003 is an apocalyptic number.

123120003 is a deficient number, since it is larger than the sum of its proper divisors (46335613).

123120003 is a wasteful number, since it uses less digits than its factorization.

123120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323905.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 123120003 is about 11095.9453405287. The cubic root of 123120003 is about 497.4806645516.

Adding to 123120003 its reverse (300021321), we get a palindrome (423141324).

The spelling of 123120003 in words is "one hundred twenty-three million, one hundred twenty thousand, three".