42913073 has 20 divisors (see below), whose sum is σ = 51056628. Its totient is φ = 36056160.

The previous prime is 42913067. The next prime is 42913103. The reversal of 42913073 is 37031924.

42913073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 20322064 + 22591009 = 4508^2 + 4753^2 .

It is not a de Polignac number, because 42913073 - 2⁸ = 42912817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42913873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146315 + ... + 146607.

Almost surely, 2^42913073 is an apocalyptic number.

It is an amenable number.

42913073 is a deficient number, since it is larger than the sum of its proper divisors (8143555).

42913073 is an frugal number, since it uses more digits than its factorization.

42913073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 42913073 is about 6550.8070495169. The cubic root of 42913073 is about 350.1035693495.

Adding to 42913073 its reverse (37031924), we get a palindrome (79944997).

The spelling of 42913073 in words is "forty-two million, nine hundred thirteen thousand, seventy-three".