102120320 has 32 divisors (see below), whose sum is σ = 244132920. Its totient is φ = 40847872.

The previous prime is 102120311. The next prime is 102120323. The reversal of 102120320 is 23021201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79142 + ... + 80421.

Almost surely, 2^102120320 is an apocalyptic number.

102120320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120320 is an abundant number, since it is smaller than the sum of its proper divisors (142012600).

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

102120320 is an equidigital number, since it uses as much as digits as its factorization.

102120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159582 (or 159570 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 102120320 is about 10105.4599103653. The cubic root of 102120320 is about 467.4165178319.

Adding to 102120320 its reverse (23021201), we get a palindrome (125141521).

The spelling of 102120320 in words is "one hundred two million, one hundred twenty thousand, three hundred twenty".