202130123 has 16 divisors (see below), whose sum is σ = 223712832. Its totient is φ = 181440000.

The previous prime is 202130101. The next prime is 202130147. The reversal of 202130123 is 321031202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202130123 - 2⁶ = 202130059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202130098 and 202130107.

It is not an unprimeable number, because it can be changed into a prime (202130183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320018 + ... + 320648.

It is an arithmetic number, because the mean of its divisors is an integer number (13982052).

Almost surely, 2^202130123 is an apocalyptic number.

202130123 is a deficient number, since it is larger than the sum of its proper divisors (21582709).

202130123 is a wasteful number, since it uses less digits than its factorization.

202130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 202130123 is about 14217.2473777451. The cubic root of 202130123 is about 586.8723925896.

Adding to 202130123 its reverse (321031202), we get a palindrome (523161325).

The spelling of 202130123 in words is "two hundred two million, one hundred thirty thousand, one hundred twenty-three".