102100080 has 40 divisors (see below), whose sum is σ = 316510992. Its totient is φ = 27226624.

The previous prime is 102100073. The next prime is 102100093. The reversal of 102100080 is 80001201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212469 + ... + 212948.

Almost surely, 2^102100080 is an apocalyptic number.

102100080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100080 is an abundant number, since it is smaller than the sum of its proper divisors (214410912).

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

102100080 is a wasteful number, since it uses less digits than its factorization.

102100080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425433 (or 425427 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 102100080 is about 10104.4584219047. The cubic root of 102100080 is about 467.3856355177.

Adding to 102100080 its reverse (80001201), we get a palindrome (182101281).

The spelling of 102100080 in words is "one hundred two million, one hundred thousand, eighty".