102730145 has 8 divisors (see below), whose sum is σ = 140887104. Its totient is φ = 70443504.

The previous prime is 102730141. The next prime is 102730157. The reversal of 102730145 is 541037201.

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

It is a cyclic number.

It is not a de Polignac number, because 102730145 - 2² = 102730141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102730145.

It is not an unprimeable number, because it can be changed into a prime (102730141) 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, 1467539 + ... + 1467608.

It is an arithmetic number, because the mean of its divisors is an integer number (17610888).

Almost surely, 2^102730145 is an apocalyptic number.

It is an amenable number.

102730145 is a deficient number, since it is larger than the sum of its proper divisors (38156959).

102730145 is an equidigital number, since it uses as much as digits as its factorization.

102730145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935159.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 102730145 is about 10135.5880441147. The cubic root of 102730145 is about 468.3450851130.

Adding to 102730145 its reverse (541037201), we get a palindrome (643767346).

The spelling of 102730145 in words is "one hundred two million, seven hundred thirty thousand, one hundred forty-five".