102420020132 has 24 divisors (see below), whose sum is σ = 180929582400. Its totient is φ = 50728122720.

The previous prime is 102420020117. The next prime is 102420020137. The reversal of 102420020132 is 231020024201.

It is a self number, because there is not a number n which added to its sum of digits gives 102420020132.

It is not an unprimeable number, because it can be changed into a prime (102420020137) 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, 102719 + ... + 464102.

It is an arithmetic number, because the mean of its divisors is an integer number (7538732600).

Almost surely, 2^102420020132 is an apocalyptic number.

It is an amenable number.

102420020132 is a deficient number, since it is larger than the sum of its proper divisors (78509562268).

102420020132 is a wasteful number, since it uses less digits than its factorization.

102420020132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567251 (or 567249 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 102420020132 its reverse (231020024201), we get a palindrome (333440044333).

The spelling of 102420020132 in words is "one hundred two billion, four hundred twenty million, twenty thousand, one hundred thirty-two".