102642532122 has 16 divisors (see below), whose sum is σ = 221076223200. Its totient is φ = 31582317552.

The previous prime is 102642532081. The next prime is 102642532123. The reversal of 102642532122 is 221235246201.

It is a self number, because there is not a number n which added to its sum of digits gives 102642532122.

It is not an unprimeable number, because it can be changed into a prime (102642532123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657964872 + ... + 657965027.

It is an arithmetic number, because the mean of its divisors is an integer number (13817263950).

Almost surely, 2^102642532122 is an apocalyptic number.

102642532122 is an abundant number, since it is smaller than the sum of its proper divisors (118433691078).

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

102642532122 is a wasteful number, since it uses less digits than its factorization.

102642532122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315929917.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 102642532122 its reverse (221235246201), we get a palindrome (323877778323).

The spelling of 102642532122 in words is "one hundred two billion, six hundred forty-two million, five hundred thirty-two thousand, one hundred twenty-two".