42631142447 has 2 divisors, whose sum is σ = 42631142448. Its totient is φ = 42631142446.

The previous prime is 42631142377. The next prime is 42631142467. The reversal of 42631142447 is 74424113624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42631142447 - 2²⁶ = 42564033583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42631142447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42631142467) 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, 21315571223 + 21315571224.

It is an arithmetic number, because the mean of its divisors is an integer number (21315571224).

Almost surely, 2^42631142447 is an apocalyptic number.

42631142447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42631142447 is an equidigital number, since it uses as much as digits as its factorization.

42631142447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 38.

The spelling of 42631142447 in words is "forty-two billion, six hundred thirty-one million, one hundred forty-two thousand, four hundred forty-seven".