102712161 has 4 divisors (see below), whose sum is σ = 136949552. Its totient is φ = 68474772.

The previous prime is 102712153. The next prime is 102712187. The reversal of 102712161 is 161217201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102712161 - 2³ = 102712153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102712151) 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 3 ways as a sum of consecutive naturals, for example, 17118691 + ... + 17118696.

It is an arithmetic number, because the mean of its divisors is an integer number (34237388).

Almost surely, 2^102712161 is an apocalyptic number.

It is an amenable number.

102712161 is a deficient number, since it is larger than the sum of its proper divisors (34237391).

102712161 is an equidigital number, since it uses as much as digits as its factorization.

102712161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34237390.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 102712161 is about 10134.7008342624. The cubic root of 102712161 is about 468.3177539287.

Adding to 102712161 its reverse (161217201), we get a palindrome (263929362).

The spelling of 102712161 in words is "one hundred two million, seven hundred twelve thousand, one hundred sixty-one".