202100512642 has 48 divisors (see below), whose sum is σ = 353487780000. Its totient is φ = 86407776000.

The previous prime is 202100512637. The next prime is 202100512643. The reversal of 202100512642 is 246215001202.

It is not an unprimeable number, because it can be changed into a prime (202100512643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128643717 + ... + 128645287.

It is an arithmetic number, because the mean of its divisors is an integer number (7364328750).

Almost surely, 2^202100512642 is an apocalyptic number.

202100512642 is a deficient number, since it is larger than the sum of its proper divisors (151387267358).

202100512642 is a wasteful number, since it uses less digits than its factorization.

202100512642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887 (or 3880 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 202100512642 its reverse (246215001202), we get a palindrome (448315513844).

The spelling of 202100512642 in words is "two hundred two billion, one hundred million, five hundred twelve thousand, six hundred forty-two".