135042020441 has 2 divisors, whose sum is σ = 135042020442. Its totient is φ = 135042020440.

The previous prime is 135042020387. The next prime is 135042020467. The reversal of 135042020441 is 144020240531.

It is an a-pointer prime, because the next prime (135042020467) can be obtained adding 135042020441 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83986358416 + 51055662025 = 289804^2 + 225955^2 .

It is an emirp because it is prime and its reverse (144020240531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135042020441 - 2¹⁴ = 135042004057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135042020441.

It is not a weakly prime, because it can be changed into another prime (135042080441) 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, 67521010220 + 67521010221.

It is an arithmetic number, because the mean of its divisors is an integer number (67521010221).

Almost surely, 2^135042020441 is an apocalyptic number.

It is an amenable number.

135042020441 is a deficient number, since it is larger than the sum of its proper divisors (1).

135042020441 is an equidigital number, since it uses as much as digits as its factorization.

135042020441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 135042020441 its reverse (144020240531), we get a palindrome (279062260972).

The spelling of 135042020441 in words is "one hundred thirty-five billion, forty-two million, twenty thousand, four hundred forty-one".