202012242140 has 48 divisors (see below), whose sum is σ = 440849606400. Its totient is φ = 77673431040.

The previous prime is 202012242127. The next prime is 202012242143. The reversal of 202012242140 is 41242210202.

202012242140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012242143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000997 + ... + 1185756.

It is an arithmetic number, because the mean of its divisors is an integer number (9184366800).

Almost surely, 2^202012242140 is an apocalyptic number.

202012242140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202012242140 is an abundant number, since it is smaller than the sum of its proper divisors (238837364260).

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

202012242140 is a wasteful number, since it uses less digits than its factorization.

202012242140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186942 (or 2186940 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 202012242140 its reverse (41242210202), we get a palindrome (243254452342).

The spelling of 202012242140 in words is "two hundred two billion, twelve million, two hundred forty-two thousand, one hundred forty".