42478913 has 8 divisors (see below), whose sum is σ = 42882048. Its totient is φ = 42078064.

The previous prime is 42478859. The next prime is 42478921. The reversal of 42478913 is 31987424.

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

It is a cyclic number.

It is not a de Polignac number, because 42478913 - 2¹⁰ = 42477889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42478013) 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, 75170 + ... + 75732.

It is an arithmetic number, because the mean of its divisors is an integer number (5360256).

Almost surely, 2^42478913 is an apocalyptic number.

It is an amenable number.

42478913 is a deficient number, since it is larger than the sum of its proper divisors (403135).

42478913 is a wasteful number, since it uses less digits than its factorization.

42478913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143.

The product of its digits is 48384, while the sum is 38.

The square root of 42478913 is about 6517.5849054692. The cubic root of 42478913 is about 348.9188761727.

The spelling of 42478913 in words is "forty-two million, four hundred seventy-eight thousand, nine hundred thirteen".