42047715 has 16 divisors (see below), whose sum is σ = 71234208. Its totient is φ = 21106176.

The previous prime is 42047713. The next prime is 42047723. The reversal of 42047715 is 51774024.

It is not a de Polignac number, because 42047715 - 2¹ = 42047713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42047711) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 82192 + ... + 82701.

It is an arithmetic number, because the mean of its divisors is an integer number (4452138).

Almost surely, 2^42047715 is an apocalyptic number.

42047715 is a deficient number, since it is larger than the sum of its proper divisors (29186493).

42047715 is a wasteful number, since it uses less digits than its factorization.

42047715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164918.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 42047715 is about 6484.4209456204. The cubic root of 42047715 is about 347.7342484901.

The spelling of 42047715 in words is "forty-two million, forty-seven thousand, seven hundred fifteen".