42648566 has 4 divisors (see below), whose sum is σ = 63972852. Its totient is φ = 21324282.

The previous prime is 42648547. The next prime is 42648583. The reversal of 42648566 is 66584624.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10662140 + ... + 10662143.

It is an arithmetic number, because the mean of its divisors is an integer number (15993213).

Almost surely, 2^42648566 is an apocalyptic number.

42648566 is a deficient number, since it is larger than the sum of its proper divisors (21324286).

42648566 is a wasteful number, since it uses less digits than its factorization.

42648566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21324285.

The product of its digits is 276480, while the sum is 41.

The square root of 42648566 is about 6530.5869567750. The cubic root of 42648566 is about 349.3827651902.

The spelling of 42648566 in words is "forty-two million, six hundred forty-eight thousand, five hundred sixty-six".