242115031447 has 2 divisors, whose sum is σ = 242115031448. Its totient is φ = 242115031446.

The previous prime is 242115031427. The next prime is 242115031471. The reversal of 242115031447 is 744130511242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242115031447 - 2¹¹ = 242115029399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242115031427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121057515723 + 121057515724.

It is an arithmetic number, because the mean of its divisors is an integer number (121057515724).

Almost surely, 2^242115031447 is an apocalyptic number.

242115031447 is a deficient number, since it is larger than the sum of its proper divisors (1).

242115031447 is an equidigital number, since it uses as much as digits as its factorization.

242115031447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 34.

Adding to 242115031447 its reverse (744130511242), we get a palindrome (986245542689).

The spelling of 242115031447 in words is "two hundred forty-two billion, one hundred fifteen million, thirty-one thousand, four hundred forty-seven".