42485678 has 4 divisors (see below), whose sum is σ = 63728520. Its totient is φ = 21242838.

The previous prime is 42485671. The next prime is 42485687. The reversal of 42485678 is 87658424.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42485671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10621418 + ... + 10621421.

It is an arithmetic number, because the mean of its divisors is an integer number (15932130).

Almost surely, 2^42485678 is an apocalyptic number.

42485678 is a deficient number, since it is larger than the sum of its proper divisors (21242842).

42485678 is a wasteful number, since it uses less digits than its factorization.

42485678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21242841.

The product of its digits is 430080, while the sum is 44.

The square root of 42485678 is about 6518.1038653891. The cubic root of 42485678 is about 348.9373976048.

The spelling of 42485678 in words is "forty-two million, four hundred eighty-five thousand, six hundred seventy-eight".