42271013 has 4 divisors (see below), whose sum is σ = 42287808. Its totient is φ = 42254220.

The previous prime is 42271003. The next prime is 42271039. The reversal of 42271013 is 31017224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42271013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42271003) 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, 3773 + ... + 9938.

It is an arithmetic number, because the mean of its divisors is an integer number (10571952).

Almost surely, 2^42271013 is an apocalyptic number.

It is an amenable number.

42271013 is a deficient number, since it is larger than the sum of its proper divisors (16795).

42271013 is a wasteful number, since it uses less digits than its factorization.

42271013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16794.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 42271013 is about 6501.6161836885. The cubic root of 42271013 is about 348.3487195623.

Adding to 42271013 its reverse (31017224), we get a palindrome (73288237).

The spelling of 42271013 in words is "forty-two million, two hundred seventy-one thousand, thirteen".