42478916 has 6 divisors (see below), whose sum is σ = 74338110. Its totient is φ = 21239456.

The previous prime is 42478859. The next prime is 42478921. The reversal of 42478916 is 61987424.

It can be written as a sum of positive squares in only one way, i.e., 42198016 + 280900 = 6496^2 + 530^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5309861 + ... + 5309868.

It is an arithmetic number, because the mean of its divisors is an integer number (12389685).

Almost surely, 2^42478916 is an apocalyptic number.

It is an amenable number.

42478916 is a deficient number, since it is larger than the sum of its proper divisors (31859194).

42478916 is a wasteful number, since it uses less digits than its factorization.

42478916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10619733 (or 10619731 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 42478916 is about 6517.5851356158. The cubic root of 42478916 is about 348.9188843867.

The spelling of 42478916 in words is "forty-two million, four hundred seventy-eight thousand, nine hundred sixteen".