42161461271 has 2 divisors, whose sum is σ = 42161461272. Its totient is φ = 42161461270.

The previous prime is 42161461267. The next prime is 42161461313. The reversal of 42161461271 is 17216416124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42161461271 - 2² = 42161461267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42161464271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21080730635 + 21080730636.

It is an arithmetic number, because the mean of its divisors is an integer number (21080730636).

Almost surely, 2^42161461271 is an apocalyptic number.

42161461271 is a deficient number, since it is larger than the sum of its proper divisors (1).

42161461271 is an equidigital number, since it uses as much as digits as its factorization.

42161461271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

Adding to 42161461271 its reverse (17216416124), we get a palindrome (59377877395).

The spelling of 42161461271 in words is "forty-two billion, one hundred sixty-one million, four hundred sixty-one thousand, two hundred seventy-one".