42013271 has 2 divisors, whose sum is σ = 42013272. Its totient is φ = 42013270.

The previous prime is 42013267. The next prime is 42013291. The reversal of 42013271 is 17231024.

It is an a-pointer prime, because the next prime (42013291) can be obtained adding 42013271 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42013271 - 2² = 42013267 is a prime.

It is a super-2 number, since 2×42013271² = 3530229880238882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42013211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006635 + 21006636.

It is an arithmetic number, because the mean of its divisors is an integer number (21006636).

Almost surely, 2^42013271 is an apocalyptic number.

42013271 is a deficient number, since it is larger than the sum of its proper divisors (1).

42013271 is an equidigital number, since it uses as much as digits as its factorization.

42013271 is an evil number, because the sum of its binary digits is even.

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

The square root of 42013271 is about 6481.7644974189. The cubic root of 42013271 is about 347.6392720218.

Adding to 42013271 its reverse (17231024), we get a palindrome (59244295).

The spelling of 42013271 in words is "forty-two million, thirteen thousand, two hundred seventy-one".