202013123 has 8 divisors (see below), whose sum is σ = 217663488. Its totient is φ = 186378624.

The previous prime is 202013113. The next prime is 202013129. The reversal of 202013123 is 321310202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202013123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202013098 and 202013107.

It is not an unprimeable number, because it can be changed into a prime (202013129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44411 + ... + 48747.

It is an arithmetic number, because the mean of its divisors is an integer number (27207936).

Almost surely, 2^202013123 is an apocalyptic number.

202013123 is a deficient number, since it is larger than the sum of its proper divisors (15650365).

202013123 is a wasteful number, since it uses less digits than its factorization.

202013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933.

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

The square root of 202013123 is about 14213.1320615830. The cubic root of 202013123 is about 586.7591366309.

Adding to 202013123 its reverse (321310202), we get a palindrome (523323325).

The spelling of 202013123 in words is "two hundred two million, thirteen thousand, one hundred twenty-three".