42004727 has 4 divisors (see below), whose sum is σ = 42283056. Its totient is φ = 41726400.

The previous prime is 42004717. The next prime is 42004741. The reversal of 42004727 is 72740024.

42004727 = 49² + 50² + ... + 501².

42004727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42004727 - 2⁶ = 42004663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42004696 and 42004705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138938 + ... + 139239.

It is an arithmetic number, because the mean of its divisors is an integer number (10570764).

Almost surely, 2^42004727 is an apocalyptic number.

42004727 is a deficient number, since it is larger than the sum of its proper divisors (278329).

42004727 is a wasteful number, since it uses less digits than its factorization.

42004727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278328.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 42004727 is about 6481.1053841147. The cubic root of 42004727 is about 347.6157046169.

The spelling of 42004727 in words is "forty-two million, four thousand, seven hundred twenty-seven".