42671044181 has 2 divisors, whose sum is σ = 42671044182. Its totient is φ = 42671044180.

The previous prime is 42671044139. The next prime is 42671044211. The reversal of 42671044181 is 18144017624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30424080625 + 12246963556 = 174425^2 + 110666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42671044181 is a prime.

It is a super-2 number, since 2×42671044181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42671044081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21335522090 + 21335522091.

It is an arithmetic number, because the mean of its divisors is an integer number (21335522091).

Almost surely, 2^42671044181 is an apocalyptic number.

It is an amenable number.

42671044181 is a deficient number, since it is larger than the sum of its proper divisors (1).

42671044181 is an equidigital number, since it uses as much as digits as its factorization.

42671044181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 42671044181 in words is "forty-two billion, six hundred seventy-one million, forty-four thousand, one hundred eighty-one".