42271678 has 4 divisors (see below), whose sum is σ = 63407520. Its totient is φ = 21135838.

The previous prime is 42271667. The next prime is 42271681. The reversal of 42271678 is 87617224.

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

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, 10567918 + ... + 10567921.

It is an arithmetic number, because the mean of its divisors is an integer number (15851880).

Almost surely, 2^42271678 is an apocalyptic number.

42271678 is a deficient number, since it is larger than the sum of its proper divisors (21135842).

42271678 is a wasteful number, since it uses less digits than its factorization.

42271678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21135841.

The product of its digits is 37632, while the sum is 37.

The square root of 42271678 is about 6501.6673246176. The cubic root of 42271678 is about 348.3505462726.

The spelling of 42271678 in words is "forty-two million, two hundred seventy-one thousand, six hundred seventy-eight".