42418478 has 16 divisors (see below), whose sum is σ = 66479616. Its totient is φ = 20275320.

The previous prime is 42418471. The next prime is 42418483. The reversal of 42418478 is 87481424.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42418471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025 + ... + 9267.

It is an arithmetic number, because the mean of its divisors is an integer number (4154976).

Almost surely, 2^42418478 is an apocalyptic number.

42418478 is a deficient number, since it is larger than the sum of its proper divisors (24061138).

42418478 is a wasteful number, since it uses less digits than its factorization.

42418478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359.

The product of its digits is 57344, while the sum is 38.

The square root of 42418478 is about 6512.9469520333. The cubic root of 42418478 is about 348.7533279916.

The spelling of 42418478 in words is "forty-two million, four hundred eighteen thousand, four hundred seventy-eight".