42505383894 has 8 divisors (see below), whose sum is σ = 85010767800. Its totient is φ = 14168461296.

The previous prime is 42505383859. The next prime is 42505383913. The reversal of 42505383894 is 49838350524.

It is a happy number.

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

42505383894 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3542115319 + ... + 3542115330.

It is an arithmetic number, because the mean of its divisors is an integer number (10626345975).

Almost surely, 2^42505383894 is an apocalyptic number.

42505383894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42505383894 is a wasteful number, since it uses less digits than its factorization.

42505383894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7084230654.

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 42505383894 in words is "forty-two billion, five hundred five million, three hundred eighty-three thousand, eight hundred ninety-four".