102002161 has 4 divisors (see below), whose sum is σ = 102677824. Its totient is φ = 101326500.

The previous prime is 102002143. The next prime is 102002167. The reversal of 102002161 is 161200201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161200201 = 151 ⋅1067551.

It is a cyclic number.

It is not a de Polignac number, because 102002161 - 2⁵ = 102002129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102002167) 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, 337605 + ... + 337906.

It is an arithmetic number, because the mean of its divisors is an integer number (25669456).

Almost surely, 2^102002161 is an apocalyptic number.

It is an amenable number.

102002161 is a deficient number, since it is larger than the sum of its proper divisors (675663).

102002161 is an equidigital number, since it uses as much as digits as its factorization.

102002161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675662.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102002161 is about 10099.6119232374. The cubic root of 102002161 is about 467.2361724535.

Adding to 102002161 its reverse (161200201), we get a palindrome (263202362).

The spelling of 102002161 in words is "one hundred two million, two thousand, one hundred sixty-one".