30105242103 has 4 divisors (see below), whose sum is σ = 40140322808. Its totient is φ = 20070161400.

The previous prime is 30105242021. The next prime is 30105242197. The reversal of 30105242103 is 30124250103.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30105242103 - 2¹³ = 30105233911 is a prime.

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 30105242103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30105232103) 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, 5017540348 + ... + 5017540353.

It is an arithmetic number, because the mean of its divisors is an integer number (10035080702).

Almost surely, 2^30105242103 is an apocalyptic number.

30105242103 is a deficient number, since it is larger than the sum of its proper divisors (10035080705).

30105242103 is a wasteful number, since it uses less digits than its factorization.

30105242103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035080704.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 30105242103 its reverse (30124250103), we get a palindrome (60229492206).

The spelling of 30105242103 in words is "thirty billion, one hundred five million, two hundred forty-two thousand, one hundred three".