42540663 has 8 divisors (see below), whose sum is σ = 61877376. Its totient is φ = 25782200.

The previous prime is 42540637. The next prime is 42540679. The reversal of 42540663 is 36604524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42540663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42540663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540263) 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, 644523 + ... + 644588.

It is an arithmetic number, because the mean of its divisors is an integer number (7734672).

Almost surely, 2^42540663 is an apocalyptic number.

42540663 is a deficient number, since it is larger than the sum of its proper divisors (19336713).

42540663 is a wasteful number, since it uses less digits than its factorization.

42540663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289125.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 42540663 is about 6522.3203693164. The cubic root of 42540663 is about 349.0878644026.

The spelling of 42540663 in words is "forty-two million, five hundred forty thousand, six hundred sixty-three".