102134220 has 24 divisors (see below), whose sum is σ = 285975984. Its totient is φ = 27235776.

The previous prime is 102134213. The next prime is 102134231. The reversal of 102134220 is 22431201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102134220.

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, 851059 + ... + 851178.

It is an arithmetic number, because the mean of its divisors is an integer number (11915666).

Almost surely, 2^102134220 is an apocalyptic number.

102134220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102134220 is an abundant number, since it is smaller than the sum of its proper divisors (183841764).

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

102134220 is a wasteful number, since it uses less digits than its factorization.

102134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702249 (or 1702247 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102134220 is about 10106.1476339899. The cubic root of 102134220 is about 467.4377241724.

Adding to 102134220 its reverse (22431201), we get a palindrome (124565421).

The spelling of 102134220 in words is "one hundred two million, one hundred thirty-four thousand, two hundred twenty".