42180375247 has 2 divisors, whose sum is σ = 42180375248. Its totient is φ = 42180375246.

The previous prime is 42180375239. The next prime is 42180375301. The reversal of 42180375247 is 74257308124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42180375247 - 2³ = 42180375239 is a prime.

It is a super-2 number, since 2×42180375247² (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 (42180375227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21090187623 + 21090187624.

It is an arithmetic number, because the mean of its divisors is an integer number (21090187624).

Almost surely, 2^42180375247 is an apocalyptic number.

42180375247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42180375247 is an equidigital number, since it uses as much as digits as its factorization.

42180375247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 42180375247 in words is "forty-two billion, one hundred eighty million, three hundred seventy-five thousand, two hundred forty-seven".