42578663 has 8 divisors (see below), whose sum is σ = 44307648. Its totient is φ = 40884064.

The previous prime is 42578633. The next prime is 42578689. The reversal of 42578663 is 36687524.

It is a happy number.

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 42578663 - 2¹⁴ = 42562279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42578663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42578633) 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, 6056 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (5538456).

Almost surely, 2^42578663 is an apocalyptic number.

42578663 is a deficient number, since it is larger than the sum of its proper divisors (1728985).

42578663 is a wasteful number, since it uses less digits than its factorization.

42578663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17193.

The product of its digits is 241920, while the sum is 41.

The square root of 42578663 is about 6525.2327927822. The cubic root of 42578663 is about 349.1917758923.

The spelling of 42578663 in words is "forty-two million, five hundred seventy-eight thousand, six hundred sixty-three".