42217997094 has 256 divisors, whose sum is σ = 119899422720. Its totient is φ = 10711440000.

The previous prime is 42217997069. The next prime is 42217997111. The reversal of 42217997094 is 49079971224.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 42217997094.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29095069 + ... + 29096519.

It is an arithmetic number, because the mean of its divisors is an integer number (468357120).

Almost surely, 2^42217997094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42217997094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59949711360).

42217997094 is an abundant number, since it is smaller than the sum of its proper divisors (77681425626).

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

42217997094 is a wasteful number, since it uses less digits than its factorization.

42217997094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 42217997094 in words is "forty-two billion, two hundred seventeen million, nine hundred ninety-seven thousand, ninety-four".