42356307989 has 8 divisors (see below), whose sum is σ = 42426303768. Its totient is φ = 42286351360.

The previous prime is 42356307979. The next prime is 42356307991. The reversal of 42356307989 is 98970365324.

42356307989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2360307889 + 39996000100 = 48583^2 + 199990^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42356307989 - 2²⁰ = 42355259413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42356307979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2790629 + ... + 2805765.

It is an arithmetic number, because the mean of its divisors is an integer number (5303287971).

Almost surely, 2^42356307989 is an apocalyptic number.

It is an amenable number.

42356307989 is a deficient number, since it is larger than the sum of its proper divisors (69995779).

42356307989 is a wasteful number, since it uses less digits than its factorization.

42356307989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19575.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 42356307989 in words is "forty-two billion, three hundred fifty-six million, three hundred seven thousand, nine hundred eighty-nine".