42663545 has 16 divisors (see below), whose sum is σ = 53042688. Its totient is φ = 32921280.

The previous prime is 42663539. The next prime is 42663563. The reversal of 42663545 is 54536624.

It is a happy number.

It is not a de Polignac number, because 42663545 - 2⁴ = 42663529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15407 + ... + 17963.

It is an arithmetic number, because the mean of its divisors is an integer number (3315168).

Almost surely, 2^42663545 is an apocalyptic number.

It is an amenable number.

42663545 is a deficient number, since it is larger than the sum of its proper divisors (10379143).

42663545 is a wasteful number, since it uses less digits than its factorization.

42663545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680.

The product of its digits is 86400, while the sum is 35.

The square root of 42663545 is about 6531.7336902234. The cubic root of 42663545 is about 349.4236637272.

The spelling of 42663545 in words is "forty-two million, six hundred sixty-three thousand, five hundred forty-five".