210431021340142 has 8 divisors (see below), whose sum is σ = 315646786821600. Its totient is φ = 105215425732944.

The previous prime is 210431021340139. The next prime is 210431021340161. The reversal of 210431021340142 is 241043120134012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 210431021340142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39325167 + ... + 44354602.

It is an arithmetic number, because the mean of its divisors is an integer number (39455848352700).

Almost surely, 2^{210431021340142} is an apocalyptic number.

210431021340142 is a deficient number, since it is larger than the sum of its proper divisors (105215765481458).

210431021340142 is a wasteful number, since it uses less digits than its factorization.

210431021340142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84937130.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 210431021340142 its reverse (241043120134012), we get a palindrome (451474141474154).

The spelling of 210431021340142 in words is "two hundred ten trillion, four hundred thirty-one billion, twenty-one million, three hundred forty thousand, one hundred forty-two".