42715778 has 16 divisors (see below), whose sum is σ = 73764864. Its totient is φ = 18172320.

The previous prime is 42715769. The next prime is 42715787. The reversal of 42715778 is 87751724.

It is an interprime number because it is at equal distance from previous prime (42715769) and next prime (42715787).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9218 + ... + 13053.

It is an arithmetic number, because the mean of its divisors is an integer number (4610304).

Almost surely, 2^42715778 is an apocalyptic number.

42715778 is a deficient number, since it is larger than the sum of its proper divisors (31049086).

42715778 is a wasteful number, since it uses less digits than its factorization.

42715778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22417.

The product of its digits is 109760, while the sum is 41.

The square root of 42715778 is about 6535.7308696121. The cubic root of 42715778 is about 349.5662054286.

The spelling of 42715778 in words is "forty-two million, seven hundred fifteen thousand, seven hundred seventy-eight".