202132123 has 4 divisors (see below), whose sum is σ = 202317480. Its totient is φ = 201946768.

The previous prime is 202132111. The next prime is 202132157. The reversal of 202132123 is 321231202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202132123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202132097 and 202132106.

It is not an unprimeable number, because it can be changed into a prime (202132103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91033 + ... + 93226.

It is an arithmetic number, because the mean of its divisors is an integer number (50579370).

Almost surely, 2^202132123 is an apocalyptic number.

202132123 is a deficient number, since it is larger than the sum of its proper divisors (185357).

202132123 is a wasteful number, since it uses less digits than its factorization.

202132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185356.

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

The square root of 202132123 is about 14217.3177146746. The cubic root of 202132123 is about 586.8743282089.

Adding to 202132123 its reverse (321231202), we get a palindrome (523363325).

The spelling of 202132123 in words is "two hundred two million, one hundred thirty-two thousand, one hundred twenty-three".