123202123 has 16 divisors (see below), whose sum is σ = 136730592. Its totient is φ = 110080000.

The previous prime is 123202117. The next prime is 123202133. The reversal of 123202123 is 321202321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123202123 is a prime.

It is a super-2 number, since 2×123202123² = 30357526223414258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123202097 and 123202106.

It is not an unprimeable number, because it can be changed into a prime (123202103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191883 + ... + 192523.

It is an arithmetic number, because the mean of its divisors is an integer number (8545662).

Almost surely, 2^123202123 is an apocalyptic number.

123202123 is a deficient number, since it is larger than the sum of its proper divisors (13528469).

123202123 is a wasteful number, since it uses less digits than its factorization.

123202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123202123 is about 11099.6451745090. The cubic root of 123202123 is about 497.5912451008.

Adding to 123202123 its reverse (321202321), we get a palindrome (444404444).

The spelling of 123202123 in words is "one hundred twenty-three million, two hundred two thousand, one hundred twenty-three".