42790232164 has 27 divisors (see below), whose sum is σ = 75352813963. Its totient is φ = 21261692672.

The previous prime is 42790232129. The next prime is 42790232167. The reversal of 42790232164 is 46123209724.

The square root of 42790232164 is 206858.

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

It can be written as a sum of positive squares in 4 ways, for example, as 8328022564 + 34462209600 = 91258^2 + 185640^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42790232167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 121218612 + ... + 121218964.

Almost surely, 2^42790232164 is an apocalyptic number.

42790232164 is the 206858-th square number.

It is an amenable number.

42790232164 is a deficient number, since it is larger than the sum of its proper divisors (32562581799).

42790232164 is an frugal number, since it uses more digits than its factorization.

42790232164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 42790232164 in words is "forty-two billion, seven hundred ninety million, two hundred thirty-two thousand, one hundred sixty-four".