123021003 has 32 divisors (see below), whose sum is σ = 192969216. Its totient is φ = 68260608.

The previous prime is 123020983. The next prime is 123021007. The reversal of 123021003 is 300120321.

It is a happy number.

It is not a de Polignac number, because 123021003 - 2⁶ = 123020939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123021003.

It is not an unprimeable number, because it can be changed into a prime (123021007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118575 + ... + 119607.

It is an arithmetic number, because the mean of its divisors is an integer number (6030288).

Almost surely, 2^123021003 is an apocalyptic number.

123021003 is a deficient number, since it is larger than the sum of its proper divisors (69948213).

123021003 is a wasteful number, since it uses less digits than its factorization.

123021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203.

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

The square root of 123021003 is about 11091.4833543580. The cubic root of 123021003 is about 497.3472884654.

Adding to 123021003 its reverse (300120321), we get a palindrome (423141324).

The spelling of 123021003 in words is "one hundred twenty-three million, twenty-one thousand, three".