42155231147 has 2 divisors, whose sum is σ = 42155231148. Its totient is φ = 42155231146.

The previous prime is 42155231123. The next prime is 42155231171. The reversal of 42155231147 is 74113255124.

It is a balanced prime because it is at equal distance from previous prime (42155231123) and next prime (42155231171).

It is a cyclic number.

It is not a de Polignac number, because 42155231147 - 2¹⁴ = 42155214763 is a prime.

It is not a weakly prime, because it can be changed into another prime (42155231747) 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, 21077615573 + 21077615574.

It is an arithmetic number, because the mean of its divisors is an integer number (21077615574).

Almost surely, 2^42155231147 is an apocalyptic number.

42155231147 is a deficient number, since it is larger than the sum of its proper divisors (1).

42155231147 is an equidigital number, since it uses as much as digits as its factorization.

42155231147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The spelling of 42155231147 in words is "forty-two billion, one hundred fifty-five million, two hundred thirty-one thousand, one hundred forty-seven".