42181595724547 has 2 divisors, whose sum is σ = 42181595724548. Its totient is φ = 42181595724546.

The previous prime is 42181595724517. The next prime is 42181595724553. The reversal of 42181595724547 is 74542759518124.

It is a happy number.

42181595724547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42181595724547 - 2¹⁵ = 42181595691779 is a prime.

It is not a weakly prime, because it can be changed into another prime (42181595724517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21090797862273 + 21090797862274.

It is an arithmetic number, because the mean of its divisors is an integer number (21090797862274).

Almost surely, 2^{42181595724547} is an apocalyptic number.

42181595724547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42181595724547 is an equidigital number, since it uses as much as digits as its factorization.

42181595724547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896000, while the sum is 64.

The spelling of 42181595724547 in words is "forty-two trillion, one hundred eighty-one billion, five hundred ninety-five million, seven hundred twenty-four thousand, five hundred forty-seven".