42573418 has 4 divisors (see below), whose sum is σ = 63860130. Its totient is φ = 21286708.

The previous prime is 42573413. The next prime is 42573431. The reversal of 42573418 is 81437524.

42573418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38601369 + 3972049 = 6213^2 + 1993^2 .

It is not an unprimeable number, because it can be changed into a prime (42573413) 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 as a sum of consecutive naturals, namely, 10643353 + ... + 10643356.

Almost surely, 2^42573418 is an apocalyptic number.

42573418 is a deficient number, since it is larger than the sum of its proper divisors (21286712).

42573418 is a wasteful number, since it uses less digits than its factorization.

42573418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21286711.

The product of its digits is 26880, while the sum is 34.

The square root of 42573418 is about 6524.8308790343. The cubic root of 42573418 is about 349.1774370510.

The spelling of 42573418 in words is "forty-two million, five hundred seventy-three thousand, four hundred eighteen".