202111442 has 32 divisors (see below), whose sum is σ = 343308672. Its totient is φ = 88539264.

The previous prime is 202111433. The next prime is 202111447. The reversal of 202111442 is 244111202.

It is a self number, because there is not a number n which added to its sum of digits gives 202111442.

It is not an unprimeable number, because it can be changed into a prime (202111447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80693 + ... + 83159.

It is an arithmetic number, because the mean of its divisors is an integer number (10728396).

Almost surely, 2^202111442 is an apocalyptic number.

202111442 is a deficient number, since it is larger than the sum of its proper divisors (141197230).

202111442 is a wasteful number, since it uses less digits than its factorization.

202111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 202111442 is about 14216.5903788496. The cubic root of 202111442 is about 586.8543123207.

Adding to 202111442 its reverse (244111202), we get a palindrome (446222644).

The spelling of 202111442 in words is "two hundred two million, one hundred eleven thousand, four hundred forty-two".