102124243 has 4 divisors (see below), whose sum is σ = 109979968. Its totient is φ = 94268520.

The previous prime is 102124241. The next prime is 102124247. The reversal of 102124243 is 342421201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342421201 = 3907 ⋅87643.

It is a cyclic number.

It is not a de Polignac number, because 102124243 - 2¹ = 102124241 is a prime.

It is a super-2 number, since 2×102124243² = 20858722016646098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102124243.

It is not an unprimeable number, because it can be changed into a prime (102124241) 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, 3927843 + ... + 3927868.

It is an arithmetic number, because the mean of its divisors is an integer number (27494992).

Almost surely, 2^102124243 is an apocalyptic number.

102124243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102124243 is a deficient number, since it is larger than the sum of its proper divisors (7855725).

102124243 is an equidigital number, since it uses as much as digits as its factorization.

102124243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855724.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 102124243 is about 10105.6540114928. The cubic root of 102124243 is about 467.4225030968.

Adding to 102124243 its reverse (342421201), we get a palindrome (444545444).

The spelling of 102124243 in words is "one hundred two million, one hundred twenty-four thousand, two hundred forty-three".