42457418 has 4 divisors (see below), whose sum is σ = 63686130. Its totient is φ = 21228708.

The previous prime is 42457417. The next prime is 42457423. The reversal of 42457418 is 81475424.

42457418 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., 34374769 + 8082649 = 5863^2 + 2843^2 .

It is not an unprimeable number, because it can be changed into a prime (42457417) 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, 10614353 + ... + 10614356.

Almost surely, 2^42457418 is an apocalyptic number.

42457418 is a deficient number, since it is larger than the sum of its proper divisors (21228712).

42457418 is a wasteful number, since it uses less digits than its factorization.

42457418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21228711.

The product of its digits is 35840, while the sum is 35.

The square root of 42457418 is about 6515.9356964292. The cubic root of 42457418 is about 348.8600134248.

It can be divided in two parts, 42457 and 418, that added together give a cube (42875 = 35³).

The spelling of 42457418 in words is "forty-two million, four hundred fifty-seven thousand, four hundred eighteen".