42505967867 has 32 divisors (see below), whose sum is σ = 49891728384. Its totient is φ = 35785152000.

The previous prime is 42505967839. The next prime is 42505967869. The reversal of 42505967867 is 76876950524.

It is a cyclic number.

It is not a de Polignac number, because 42505967867 - 2²⁰ = 42504919291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42505967869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3071678 + ... + 3085484.

It is an arithmetic number, because the mean of its divisors is an integer number (1559116512).

Almost surely, 2^42505967867 is an apocalyptic number.

42505967867 is a deficient number, since it is larger than the sum of its proper divisors (7385760517).

42505967867 is a wasteful number, since it uses less digits than its factorization.

42505967867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14099.

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 42505967867 in words is "forty-two billion, five hundred five million, nine hundred sixty-seven thousand, eight hundred sixty-seven".