42504555 has 8 divisors (see below), whose sum is σ = 68007312. Its totient is φ = 22669088.

The previous prime is 42504551. The next prime is 42504563. The reversal of 42504555 is 55540524.

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

It is a cyclic number.

It is not a de Polignac number, because 42504555 - 2² = 42504551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42504551) 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 7 ways as a sum of consecutive naturals, for example, 1416804 + ... + 1416833.

It is an arithmetic number, because the mean of its divisors is an integer number (8500914).

Almost surely, 2^42504555 is an apocalyptic number.

42504555 is a deficient number, since it is larger than the sum of its proper divisors (25502757).

42504555 is a wasteful number, since it uses less digits than its factorization.

42504555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833645.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 42504555 is about 6519.5517483950. The cubic root of 42504555 is about 348.9890692603.

The spelling of 42504555 in words is "forty-two million, five hundred four thousand, five hundred fifty-five".