42534505 has 16 divisors (see below), whose sum is σ = 55105344. Its totient is φ = 31331520.

The previous prime is 42534491. The next prime is 42534529. The reversal of 42534505 is 50543524.

It is not a de Polignac number, because 42534505 - 2⁷ = 42534377 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, 44442 + ... + 45388.

It is an arithmetic number, because the mean of its divisors is an integer number (3444084).

Almost surely, 2^42534505 is an apocalyptic number.

It is an amenable number.

42534505 is a deficient number, since it is larger than the sum of its proper divisors (12570839).

42534505 is a wasteful number, since it uses less digits than its factorization.

42534505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 42534505 is about 6521.8482809707. The cubic root of 42534505 is about 349.0710194465.

The spelling of 42534505 in words is "forty-two million, five hundred thirty-four thousand, five hundred five".