42647527 has 4 divisors (see below), whose sum is σ = 45928120. Its totient is φ = 39366936.

The previous prime is 42647477. The next prime is 42647557. The reversal of 42647527 is 72574624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42647527 - 2¹⁹ = 42123239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42647557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640277 + ... + 1640302.

It is an arithmetic number, because the mean of its divisors is an integer number (11482030).

Almost surely, 2^42647527 is an apocalyptic number.

42647527 is a deficient number, since it is larger than the sum of its proper divisors (3280593).

42647527 is a wasteful number, since it uses less digits than its factorization.

42647527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280592.

The product of its digits is 94080, while the sum is 37.

The square root of 42647527 is about 6530.5074075450. The cubic root of 42647527 is about 349.3799279581.

The spelling of 42647527 in words is "forty-two million, six hundred forty-seven thousand, five hundred twenty-seven".