42648569 has 8 divisors (see below), whose sum is σ = 43781472. Its totient is φ = 41520160.

The previous prime is 42648547. The next prime is 42648583. The reversal of 42648569 is 96584624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42648569 - 2¹² = 42644473 is a prime.

It is a super-2 number, since 2×42648569² = 3637800875495522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42648169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27242 + ... + 28764.

It is an arithmetic number, because the mean of its divisors is an integer number (5472684).

Almost surely, 2^42648569 is an apocalyptic number.

It is an amenable number.

42648569 is a deficient number, since it is larger than the sum of its proper divisors (1132903).

42648569 is a wasteful number, since it uses less digits than its factorization.

42648569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247.

The product of its digits is 414720, while the sum is 44.

The square root of 42648569 is about 6530.5871864634. The cubic root of 42648569 is about 349.3827733823.

The spelling of 42648569 in words is "forty-two million, six hundred forty-eight thousand, five hundred sixty-nine".