42005690896 has 50 divisors (see below), whose sum is σ = 88168916662. Its totient is φ = 19387031040.

The previous prime is 42005690869. The next prime is 42005690933. The reversal of 42005690896 is 69809650024.

It can be written as a sum of positive squares in 5 ways, for example, as 40040010000 + 1965680896 = 200100^2 + 44336^2 .

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, 411016 + ... + 502936.

Almost surely, 2^42005690896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42005690896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44084458331).

42005690896 is an abundant number, since it is smaller than the sum of its proper divisors (46163225766).

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

42005690896 is an frugal number, since it uses more digits than its factorization.

42005690896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91981 (or 91936 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 42005690896 in words is "forty-two billion, five million, six hundred ninety thousand, eight hundred ninety-six".