2143242103 has 4 divisors (see below), whose sum is σ = 2143389448. Its totient is φ = 2143094760.

The previous prime is 2143242007. The next prime is 2143242107. The reversal of 2143242103 is 3012423412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143242103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143242107) 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, 49128 + ... + 81853.

It is an arithmetic number, because the mean of its divisors is an integer number (535847362).

Almost surely, 2^2143242103 is an apocalyptic number.

2143242103 is a deficient number, since it is larger than the sum of its proper divisors (147345).

2143242103 is a wasteful number, since it uses less digits than its factorization.

2143242103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147344.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2143242103 is about 46295.1628466733. The cubic root of 2143242103 is about 1289.3091874448.

Adding to 2143242103 its reverse (3012423412), we get a palindrome (5155665515).

The spelling of 2143242103 in words is "two billion, one hundred forty-three million, two hundred forty-two thousand, one hundred three".