42504559 has 4 divisors (see below), whose sum is σ = 42687216. Its totient is φ = 42321904.

The previous prime is 42504551. The next prime is 42504563. The reversal of 42504559 is 95540524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42504559 - 2³ = 42504551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42504551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90979 + ... + 91444.

It is an arithmetic number, because the mean of its divisors is an integer number (10671804).

Almost surely, 2^42504559 is an apocalyptic number.

42504559 is a deficient number, since it is larger than the sum of its proper divisors (182657).

42504559 is a wasteful number, since it uses less digits than its factorization.

42504559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182656.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 42504559 is about 6519.5520551645. The cubic root of 42504559 is about 348.9890802078.

It can be divided in two parts, 425045 and 59, that added together give a square (425104 = 652²).

The spelling of 42504559 in words is "forty-two million, five hundred four thousand, five hundred fifty-nine".