102080138 has 16 divisors (see below), whose sum is σ = 162316224. Its totient is φ = 47981760.

The previous prime is 102080137. The next prime is 102080149. The reversal of 102080138 is 831080201.

It is not an unprimeable number, because it can be changed into a prime (102080137) by changing a digit.

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, 50381 + ... + 52367.

It is an arithmetic number, because the mean of its divisors is an integer number (10144764).

Almost surely, 2^102080138 is an apocalyptic number.

102080138 is a deficient number, since it is larger than the sum of its proper divisors (60236086).

102080138 is a wasteful number, since it uses less digits than its factorization.

102080138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 102080138 is about 10103.4715815902. The cubic root of 102080138 is about 467.3552039019.

The spelling of 102080138 in words is "one hundred two million, eighty thousand, one hundred thirty-eight".