42566516 has 6 divisors (see below), whose sum is σ = 74491410. Its totient is φ = 21283256.

The previous prime is 42566509. The next prime is 42566527. The reversal of 42566516 is 61566524.

It can be written as a sum of positive squares in only one way, i.e., 30691600 + 11874916 = 5540^2 + 3446^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5320811 + ... + 5320818.

It is an arithmetic number, because the mean of its divisors is an integer number (12415235).

Almost surely, 2^42566516 is an apocalyptic number.

It is an amenable number.

42566516 is a deficient number, since it is larger than the sum of its proper divisors (31924894).

42566516 is a wasteful number, since it uses less digits than its factorization.

42566516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641633 (or 10641631 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 42566516 is about 6524.3019549987. The cubic root of 42566516 is about 349.1585664895.

The spelling of 42566516 in words is "forty-two million, five hundred sixty-six thousand, five hundred sixteen".