102540161 has 8 divisors (see below), whose sum is σ = 103992000. Its totient is φ = 101098800.

The previous prime is 102540127. The next prime is 102540197. The reversal of 102540161 is 161045201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102540161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102540101) 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 7 ways as a sum of consecutive naturals, for example, 18236 + ... + 23186.

It is an arithmetic number, because the mean of its divisors is an integer number (12999000).

Almost surely, 2^102540161 is an apocalyptic number.

It is an amenable number.

102540161 is a deficient number, since it is larger than the sum of its proper divisors (1451839).

102540161 is a wasteful number, since it uses less digits than its factorization.

102540161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5239.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 102540161 is about 10126.2115818306. The cubic root of 102540161 is about 468.0561956164.

Adding to 102540161 its reverse (161045201), we get a palindrome (263585362).

The spelling of 102540161 in words is "one hundred two million, five hundred forty thousand, one hundred sixty-one".