202121300142 has 12 divisors (see below), whose sum is σ = 437929483680. Its totient is φ = 67373766708.

The previous prime is 202121300119. The next prime is 202121300149. The reversal of 202121300142 is 241003121202.

It is a happy number.

202121300142 is a `hidden beast` number, since 202 + 1 + 21 + 300 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11228961119 = 202121300142 / (2 + 0 + 2 + 1 + 2 + 1 + 3 + 0 + 0 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121300149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5614480542 + ... + 5614480577.

It is an arithmetic number, because the mean of its divisors is an integer number (36494123640).

Almost surely, 2^202121300142 is an apocalyptic number.

202121300142 is an abundant number, since it is smaller than the sum of its proper divisors (235808183538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202121300142 is a wasteful number, since it uses less digits than its factorization.

202121300142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11228961127 (or 11228961124 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 202121300142 its reverse (241003121202), we get a palindrome (443124421344).

The spelling of 202121300142 in words is "two hundred two billion, one hundred twenty-one million, three hundred thousand, one hundred forty-two".