42240395970 has 128 divisors (see below), whose sum is σ = 116686183680. Its totient is φ = 11001904704.

The previous prime is 42240395947. The next prime is 42240395971. The reversal of 42240395970 is 7959304224.

42240395970 is a `hidden beast` number, since 4 + 2 + 24 + 0 + 39 + 597 + 0 = 666.

42240395970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (42240395971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 917952 + ... + 962868.

It is an arithmetic number, because the mean of its divisors is an integer number (911610810).

Almost surely, 2^42240395970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42240395970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58343091840).

42240395970 is an abundant number, since it is smaller than the sum of its proper divisors (74445787710).

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

42240395970 is an equidigital number, since it uses as much as digits as its factorization.

42240395970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44988 (or 44970 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 42240395970 in words is "forty-two billion, two hundred forty million, three hundred ninety-five thousand, nine hundred seventy".