102012243 has 4 divisors (see below), whose sum is σ = 136016328. Its totient is φ = 68008160.

The previous prime is 102012233. The next prime is 102012247. The reversal of 102012243 is 342210201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342210201 = 3 ⋅114070067.

It is a cyclic number.

It is not a de Polignac number, because 102012243 - 2⁶ = 102012179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102012247) 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, 17002038 + ... + 17002043.

It is an arithmetic number, because the mean of its divisors is an integer number (34004082).

Almost surely, 2^102012243 is an apocalyptic number.

102012243 is a deficient number, since it is larger than the sum of its proper divisors (34004085).

102012243 is an equidigital number, since it uses as much as digits as its factorization.

102012243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34004084.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102012243 is about 10100.1110389936. Note that the first 3 decimals coincide. The cubic root of 102012243 is about 467.2515659833.

Adding to 102012243 its reverse (342210201), we get a palindrome (444222444).

The spelling of 102012243 in words is "one hundred two million, twelve thousand, two hundred forty-three".