202131242 has 16 divisors (see below), whose sum is σ = 305534592. Its totient is φ = 100289760.

The previous prime is 202131229. The next prime is 202131257. The reversal of 202131242 is 242131202.

It is a self number, because there is not a number n which added to its sum of digits gives 202131242.

It is an unprimeable number.

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, 195158 + ... + 196190.

It is an arithmetic number, because the mean of its divisors is an integer number (19095912).

Almost surely, 2^202131242 is an apocalyptic number.

202131242 is a deficient number, since it is larger than the sum of its proper divisors (103403350).

202131242 is a wasteful number, since it uses less digits than its factorization.

202131242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 202131242 is about 14217.2867313000. The cubic root of 202131242 is about 586.8734755701.

Adding to 202131242 its reverse (242131202), we get a palindrome (444262444).

The spelling of 202131242 in words is "two hundred two million, one hundred thirty-one thousand, two hundred forty-two".