202040121 has 16 divisors (see below), whose sum is σ = 287419968. Its totient is φ = 125798400.

The previous prime is 202040093. The next prime is 202040141. The reversal of 202040121 is 121040202.

It is not a de Polignac number, because 202040121 - 2⁵ = 202040089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202040097 and 202040106.

It is not an unprimeable number, because it can be changed into a prime (202040141) 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 15 ways as a sum of consecutive naturals, for example, 8440 + ... + 21801.

It is an arithmetic number, because the mean of its divisors is an integer number (17963748).

Almost surely, 2^202040121 is an apocalyptic number.

It is an amenable number.

202040121 is a deficient number, since it is larger than the sum of its proper divisors (85379847).

202040121 is a wasteful number, since it uses less digits than its factorization.

202040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30392.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 202040121 is about 14214.0817853282. The cubic root of 202040121 is about 586.7852745657.

Adding to 202040121 its reverse (121040202), we get a palindrome (323080323).

The spelling of 202040121 in words is "two hundred two million, forty thousand, one hundred twenty-one".