102861266 has 4 divisors (see below), whose sum is σ = 154291902. Its totient is φ = 51430632.

The previous prime is 102861263. The next prime is 102861293. The reversal of 102861266 is 662168201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662168201 = 6263 ⋅105727.

It can be written as a sum of positive squares in only one way, i.e., 93528241 + 9333025 = 9671^2 + 3055^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102861263) 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 as a sum of consecutive naturals, namely, 25715315 + ... + 25715318.

Almost surely, 2^102861266 is an apocalyptic number.

102861266 is a deficient number, since it is larger than the sum of its proper divisors (51430636).

102861266 is an equidigital number, since it uses as much as digits as its factorization.

102861266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51430635.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 102861266 is about 10142.0543283893. The cubic root of 102861266 is about 468.5442599099.

The spelling of 102861266 in words is "one hundred two million, eight hundred sixty-one thousand, two hundred sixty-six".