102121204402142 has 16 divisors (see below), whose sum is σ = 154177820444160. Its totient is φ = 50729536781208.

The previous prime is 102121204402127. The next prime is 102121204402187. The reversal of 102121204402142 is 241204402121201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234580628 + ... + 235015559.

It is an arithmetic number, because the mean of its divisors is an integer number (9636113777760).

Almost surely, 2^{102121204402142} is an apocalyptic number.

102121204402142 is a deficient number, since it is larger than the sum of its proper divisors (52056616042018).

102121204402142 is a wasteful number, since it uses less digits than its factorization.

102121204402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469596895.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 102121204402142 its reverse (241204402121201), we get a palindrome (343325606523343).

The spelling of 102121204402142 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred four million, four hundred two thousand, one hundred forty-two".