123821203 has 16 divisors (see below), whose sum is σ = 140520960. Its totient is φ = 108108000.

The previous prime is 123821177. The next prime is 123821227. The reversal of 123821203 is 302128321.

It is not a de Polignac number, because 123821203 - 2¹⁷ = 123690131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123821263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30228 + ... + 34078.

It is an arithmetic number, because the mean of its divisors is an integer number (8782560).

Almost surely, 2^123821203 is an apocalyptic number.

123821203 is a deficient number, since it is larger than the sum of its proper divisors (16699757).

123821203 is a wasteful number, since it uses less digits than its factorization.

123821203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 123821203 is about 11127.4976072790. The cubic root of 123821203 is about 498.4233039520.

Adding to 123821203 its reverse (302128321), we get a palindrome (425949524).

The spelling of 123821203 in words is "one hundred twenty-three million, eight hundred twenty-one thousand, two hundred three".