42259478 has 4 divisors (see below), whose sum is σ = 63389220. Its totient is φ = 21129738.

The previous prime is 42259447. The next prime is 42259489. The reversal of 42259478 is 87495224.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10564868 + ... + 10564871.

It is an arithmetic number, because the mean of its divisors is an integer number (15847305).

Almost surely, 2^42259478 is an apocalyptic number.

42259478 is a deficient number, since it is larger than the sum of its proper divisors (21129742).

42259478 is a wasteful number, since it uses less digits than its factorization.

42259478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21129741.

The product of its digits is 161280, while the sum is 41.

The square root of 42259478 is about 6500.7290360390. The cubic root of 42259478 is about 348.3170306440.

The spelling of 42259478 in words is "forty-two million, two hundred fifty-nine thousand, four hundred seventy-eight".