135221420242259 has 8 divisors (see below), whose sum is σ = 145626376155120. Its totient is φ = 124816936929696.

The previous prime is 135221420242231. The next prime is 135221420242261. The reversal of 135221420242259 is 952242024122531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135221420242259 is a prime.

It is a super-2 number, since 2×135221420242259² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135221420242219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117555704 + ... + 118700405.

It is an arithmetic number, because the mean of its divisors is an integer number (18203297019390).

Almost surely, 2^{135221420242259} is an apocalyptic number.

135221420242259 is a deficient number, since it is larger than the sum of its proper divisors (10404955912861).

135221420242259 is a wasteful number, since it uses less digits than its factorization.

135221420242259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236300149.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 135221420242259 in words is "one hundred thirty-five trillion, two hundred twenty-one billion, four hundred twenty million, two hundred forty-two thousand, two hundred fifty-nine".