42111340989 has 4 divisors (see below), whose sum is σ = 56148454656. Its totient is φ = 28074227324.

The previous prime is 42111340969. The next prime is 42111340991. The reversal of 42111340989 is 98904311124.

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 42111340989 - 2⁷ = 42111340861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42111340989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42111340969) 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, 7018556829 + ... + 7018556834.

It is an arithmetic number, because the mean of its divisors is an integer number (14037113664).

Almost surely, 2^42111340989 is an apocalyptic number.

It is an amenable number.

42111340989 is a deficient number, since it is larger than the sum of its proper divisors (14037113667).

42111340989 is a wasteful number, since it uses less digits than its factorization.

42111340989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14037113666.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 42111340989 in words is "forty-two billion, one hundred eleven million, three hundred forty thousand, nine hundred eighty-nine".