142426356206661 has 24 divisors (see below), whose sum is σ = 217829000689560. Its totient is φ = 89365369798656.

The previous prime is 142426356206639. The next prime is 142426356206713. The reversal of 142426356206661 is 166602653624241.

It can be written as a sum of positive squares in 4 ways, for example, as 32396871830625 + 110029484376036 = 5691825^2 + 10489494^2 .

It is not a de Polignac number, because 142426356206661 - 2⁶ = 142426356206597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142426356206598 and 142426356206607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142426356406661) 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 in 23 ways as a sum of consecutive naturals, for example, 127918725 + ... + 129027333.

It is an arithmetic number, because the mean of its divisors is an integer number (9076208362065).

Almost surely, 2^{142426356206661} is an apocalyptic number.

It is an amenable number.

142426356206661 is a deficient number, since it is larger than the sum of its proper divisors (75402644482899).

142426356206661 is a wasteful number, since it uses less digits than its factorization.

142426356206661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948325 (or 1948322 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 142426356206661 in words is "one hundred forty-two trillion, four hundred twenty-six billion, three hundred fifty-six million, two hundred six thousand, six hundred sixty-one".