134242240403261 has 2 divisors, whose sum is σ = 134242240403262. Its totient is φ = 134242240403260.

The previous prime is 134242240403233. The next prime is 134242240403417. The reversal of 134242240403261 is 162304042242431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134064417947161 + 177822456100 = 11578619^2 + 421690^2 .

It is a cyclic number.

It is not a de Polignac number, because 134242240403261 - 2⁶ = 134242240403197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134242240103261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67121120201630 + 67121120201631.

It is an arithmetic number, because the mean of its divisors is an integer number (67121120201631).

Almost surely, 2^{134242240403261} is an apocalyptic number.

It is an amenable number.

134242240403261 is a deficient number, since it is larger than the sum of its proper divisors (1).

134242240403261 is an equidigital number, since it uses as much as digits as its factorization.

134242240403261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 134242240403261 its reverse (162304042242431), we get a palindrome (296546282645692).

The spelling of 134242240403261 in words is "one hundred thirty-four trillion, two hundred forty-two billion, two hundred forty million, four hundred three thousand, two hundred sixty-one".