202023123 has 8 divisors (see below), whose sum is σ = 270438336. Its totient is φ = 134145000.

The previous prime is 202023119. The next prime is 202023131. The reversal of 202023123 is 321320202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202023123 - 2² = 202023119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202023163) 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 7 ways as a sum of consecutive naturals, for example, 133393 + ... + 134898.

It is an arithmetic number, because the mean of its divisors is an integer number (33804792).

Almost surely, 2^202023123 is an apocalyptic number.

202023123 is a deficient number, since it is larger than the sum of its proper divisors (68415213).

202023123 is a wasteful number, since it uses less digits than its factorization.

202023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268545.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 202023123 is about 14213.4838445752. The cubic root of 202023123 is about 586.7688183361.

Adding to 202023123 its reverse (321320202), we get a palindrome (523343325).

The spelling of 202023123 in words is "two hundred two million, twenty-three thousand, one hundred twenty-three".