42678518 has 8 divisors (see below), whose sum is σ = 64584648. Its totient is φ = 21150304.

The previous prime is 42678511. The next prime is 42678523. The reversal of 42678518 is 81587624.

It is a sphenic number, since it is the product of 3 distinct 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 (42678511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94196 + ... + 94647.

It is an arithmetic number, because the mean of its divisors is an integer number (8073081).

Almost surely, 2^42678518 is an apocalyptic number.

42678518 is a deficient number, since it is larger than the sum of its proper divisors (21906130).

42678518 is a wasteful number, since it uses less digits than its factorization.

42678518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188958.

The product of its digits is 107520, while the sum is 41.

The square root of 42678518 is about 6532.8797631672. The cubic root of 42678518 is about 349.4645363159.

The spelling of 42678518 in words is "forty-two million, six hundred seventy-eight thousand, five hundred eighteen".