102521330 has 8 divisors (see below), whose sum is σ = 184538412. Its totient is φ = 41008528.

The previous prime is 102521317. The next prime is 102521333. The reversal of 102521330 is 33125201.

It can be written as a sum of positive squares in 2 ways, for example, as 101586241 + 935089 = 10079^2 + 967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 102521299 and 102521308.

It is not an unprimeable number, because it can be changed into a prime (102521333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5126057 + ... + 5126076.

Almost surely, 2^102521330 is an apocalyptic number.

102521330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102521330 is a deficient number, since it is larger than the sum of its proper divisors (82017082).

102521330 is a wasteful number, since it uses less digits than its factorization.

102521330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10252140.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102521330 is about 10125.2817244756. The cubic root of 102521330 is about 468.0275417838.

Adding to 102521330 its reverse (33125201), we get a palindrome (135646531).

The spelling of 102521330 in words is "one hundred two million, five hundred twenty-one thousand, three hundred thirty".