42534555 has 16 divisors (see below), whose sum is σ = 77777664. Its totient is φ = 19444320.

The previous prime is 42534553. The next prime is 42534581. The reversal of 42534555 is 55543524.

It is not a de Polignac number, because 42534555 - 2¹ = 42534553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42534553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202441 + ... + 202650.

It is an arithmetic number, because the mean of its divisors is an integer number (4861104).

Almost surely, 2^42534555 is an apocalyptic number.

42534555 is a deficient number, since it is larger than the sum of its proper divisors (35243109).

42534555 is a wasteful number, since it uses less digits than its factorization.

42534555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405106.

The product of its digits is 60000, while the sum is 33.

The square root of 42534555 is about 6521.8521142387. The cubic root of 42534555 is about 349.0711562260.

It can be divided in two parts, 425 and 34555, that added together give a triangular number (34980 = T₂₆₄).

The spelling of 42534555 in words is "forty-two million, five hundred thirty-four thousand, five hundred fifty-five".