42103434209 has 4 divisors (see below), whose sum is σ = 42194370816. Its totient is φ = 42012497604.

The previous prime is 42103434193. The next prime is 42103434227. The reversal of 42103434209 is 90243430124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42103434209 - 2⁴ = 42103434193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42103434409) 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, 45467609 + ... + 45468534.

It is an arithmetic number, because the mean of its divisors is an integer number (10548592704).

Almost surely, 2^42103434209 is an apocalyptic number.

It is an amenable number.

42103434209 is a deficient number, since it is larger than the sum of its proper divisors (90936607).

42103434209 is an equidigital number, since it uses as much as digits as its factorization.

42103434209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90936606.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 42103434209 in words is "forty-two billion, one hundred three million, four hundred thirty-four thousand, two hundred nine".