42440121131311 has 2 divisors, whose sum is σ = 42440121131312. Its totient is φ = 42440121131310.

The previous prime is 42440121131197. The next prime is 42440121131351. The reversal of 42440121131311 is 11313112104424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42440121131311 - 2²⁵ = 42440087576879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42440121131311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42440121131351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220060565655 + 21220060565656.

It is an arithmetic number, because the mean of its divisors is an integer number (21220060565656).

Almost surely, 2^{42440121131311} is an apocalyptic number.

42440121131311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440121131311 is an equidigital number, since it uses as much as digits as its factorization.

42440121131311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 42440121131311 its reverse (11313112104424), we get a palindrome (53753233235735).

The spelling of 42440121131311 in words is "forty-two trillion, four hundred forty billion, one hundred twenty-one million, one hundred thirty-one thousand, three hundred eleven".