142121031522102 has 16 divisors (see below), whose sum is σ = 315824514493680. Its totient is φ = 47373677174016.

The previous prime is 142121031522091. The next prime is 142121031522139. The reversal of 142121031522102 is 201225130121241.

142121031522102 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 2 + 1 + 0 + 31 + 522 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1315935477003 + ... + 1315935477110.

It is an arithmetic number, because the mean of its divisors is an integer number (19739032155855).

Almost surely, 2^{142121031522102} is an apocalyptic number.

142121031522102 is an abundant number, since it is smaller than the sum of its proper divisors (173703482971578).

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

142121031522102 is a wasteful number, since it uses less digits than its factorization.

142121031522102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631870954124 (or 2631870954118 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 142121031522102 its reverse (201225130121241), we get a palindrome (343346161643343).

The spelling of 142121031522102 in words is "one hundred forty-two trillion, one hundred twenty-one billion, thirty-one million, five hundred twenty-two thousand, one hundred two".