102120064 has 16 divisors (see below), whose sum is σ = 203442570. Its totient is φ = 51059968.

The previous prime is 102120059. The next prime is 102120077. The reversal of 102120064 is 460021201.

It can be written as a sum of positive squares in only one way, i.e., 100160064 + 1960000 = 10008^2 + 1400^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398779 + ... + 399034.

Almost surely, 2^102120064 is an apocalyptic number.

It is an amenable number.

102120064 is a deficient number, since it is larger than the sum of its proper divisors (101322506).

102120064 is an frugal number, since it uses more digits than its factorization.

102120064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797827 (or 797815 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102120064 is about 10105.4472439373. The cubic root of 102120064 is about 467.4161272510.

Adding to 102120064 its reverse (460021201), we get a palindrome (562141265).

The spelling of 102120064 in words is "one hundred two million, one hundred twenty thousand, sixty-four".