42478646 has 8 divisors (see below), whose sum is σ = 72820560. Its totient is φ = 18205128.

The previous prime is 42478637. The next prime is 42478651. The reversal of 42478646 is 64687424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1517081 + ... + 1517108.

It is an arithmetic number, because the mean of its divisors is an integer number (9102570).

Almost surely, 2^42478646 is an apocalyptic number.

42478646 is a deficient number, since it is larger than the sum of its proper divisors (30341914).

42478646 is a wasteful number, since it uses less digits than its factorization.

42478646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034198.

The product of its digits is 258048, while the sum is 41.

The square root of 42478646 is about 6517.5644223897. The cubic root of 42478646 is about 348.9181451313.

The spelling of 42478646 in words is "forty-two million, four hundred seventy-eight thousand, six hundred forty-six".