42601785604 has 81 divisors (see below), whose sum is σ = 90801315381. Its totient is φ = 17436840960.

The previous prime is 42601785601. The next prime is 42601785623. The reversal of 42601785604 is 40658710624.

The square root of 42601785604 is 206402.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38454425604 + 4147360000 = 196098^2 + 64400^2 .

It is not an unprimeable number, because it can be changed into a prime (42601785601) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 66461124 + ... + 66461764.

Almost surely, 2^42601785604 is an apocalyptic number.

42601785604 is the 206402-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42601785604

42601785604 is an abundant number, since it is smaller than the sum of its proper divisors (48199529777).

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

42601785604 is an equidigital number, since it uses as much as digits as its factorization.

42601785604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 42601785604 in words is "forty-two billion, six hundred one million, seven hundred eighty-five thousand, six hundred four".