42531013 has 8 divisors (see below), whose sum is σ = 48656960. Its totient is φ = 36417600.

The previous prime is 42530989. The next prime is 42531017. The reversal of 42531013 is 31013524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42531013 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 (42531017) 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, 5878 + ... + 10936.

It is an arithmetic number, because the mean of its divisors is an integer number (6082120).

Almost surely, 2^42531013 is an apocalyptic number.

It is an amenable number.

42531013 is a deficient number, since it is larger than the sum of its proper divisors (6125947).

42531013 is a wasteful number, since it uses less digits than its factorization.

42531013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 42531013 is about 6521.5805599563. The cubic root of 42531013 is about 349.0614665015.

Adding to 42531013 its reverse (31013524), we get a palindrome (73544537).

The spelling of 42531013 in words is "forty-two million, five hundred thirty-one thousand, thirteen".