42170720000 has 90 divisors (see below), whose sum is σ = 105187616688. Its totient is φ = 16868224000.

The previous prime is 42170719961. The next prime is 42170720021. The reversal of 42170720000 is 2707124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28217 + ... + 291783.

Almost surely, 2^42170720000 is an apocalyptic number.

42170720000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42170720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52593808344).

42170720000 is an abundant number, since it is smaller than the sum of its proper divisors (63016896688).

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

42170720000 is an frugal number, since it uses more digits than its factorization.

42170720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263603 (or 263574 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The spelling of 42170720000 in words is "forty-two billion, one hundred seventy million, seven hundred twenty thousand".