42454918 has 16 divisors (see below), whose sum is σ = 72493056. Its totient is φ = 18458440.

The previous prime is 42454913. The next prime is 42454943. The reversal of 42454918 is 81945424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42454913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41446 + ... + 42457.

It is an arithmetic number, because the mean of its divisors is an integer number (4530816).

Almost surely, 2^42454918 is an apocalyptic number.

42454918 is a deficient number, since it is larger than the sum of its proper divisors (30038138).

42454918 is a wasteful number, since it uses less digits than its factorization.

42454918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83939.

The product of its digits is 46080, while the sum is 37.

The square root of 42454918 is about 6515.7438562301. The cubic root of 42454918 is about 348.8531660376.

The spelling of 42454918 in words is "forty-two million, four hundred fifty-four thousand, nine hundred eighteen".