42718283989 has 4 divisors (see below), whose sum is σ = 42721631820. Its totient is φ = 42714936160.

The previous prime is 42718283977. The next prime is 42718284013. The reversal of 42718283989 is 98938281724.

42718283989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16341275889 + 26377008100 = 127833^2 + 162410^2 .

It is a cyclic number.

It is not a de Polignac number, because 42718283989 - 2²⁵ = 42684729557 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 (42718283189) 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, 1654702 + ... + 1680319.

It is an arithmetic number, because the mean of its divisors is an integer number (10680407955).

Almost surely, 2^42718283989 is an apocalyptic number.

It is an amenable number.

42718283989 is a deficient number, since it is larger than the sum of its proper divisors (3347831).

42718283989 is a wasteful number, since it uses less digits than its factorization.

42718283989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347830.

The product of its digits is 13934592, while the sum is 61.

The spelling of 42718283989 in words is "forty-two billion, seven hundred eighteen million, two hundred eighty-three thousand, nine hundred eighty-nine".