42504539 has 32 divisors (see below), whose sum is σ = 59097600. Its totient is φ = 29514240.

The previous prime is 42504533. The next prime is 42504547. The reversal of 42504539 is 93540524.

It is a happy number.

It is not a de Polignac number, because 42504539 - 2¹² = 42500443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42504533) 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 31 ways as a sum of consecutive naturals, for example, 24017 + ... + 25725.

It is an arithmetic number, because the mean of its divisors is an integer number (1846800).

Almost surely, 2^42504539 is an apocalyptic number.

42504539 is a deficient number, since it is larger than the sum of its proper divisors (16593061).

42504539 is a wasteful number, since it uses less digits than its factorization.

42504539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 42504539 is about 6519.5505213166. The cubic root of 42504539 is about 348.9890254702.

The spelling of 42504539 in words is "forty-two million, five hundred four thousand, five hundred thirty-nine".