42513005 has 8 divisors (see below), whose sum is σ = 54016632. Its totient is φ = 32009728.

The previous prime is 42512999. The next prime is 42513007. The reversal of 42513005 is 50031524.

It can be written as a sum of positive squares in 4 ways, for example, as 1885129 + 40627876 = 1373^2 + 6374^2 .

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 42513005 - 2⁴ = 42512989 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 (42513007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249992 + ... + 250161.

It is an arithmetic number, because the mean of its divisors is an integer number (6752079).

Almost surely, 2^42513005 is an apocalyptic number.

It is an amenable number.

42513005 is a deficient number, since it is larger than the sum of its proper divisors (11503627).

42513005 is a wasteful number, since it uses less digits than its factorization.

42513005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500175.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42513005 is about 6520.1997668783. The cubic root of 42513005 is about 349.0121943287.

Adding to 42513005 its reverse (50031524), we get a palindrome (92544529).

The spelling of 42513005 in words is "forty-two million, five hundred thirteen thousand, five".