142110564661 has 4 divisors (see below), whose sum is σ = 153042146572. Its totient is φ = 131178982752.

The previous prime is 142110564641. The next prime is 142110564689. The reversal of 142110564661 is 166465011241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18087560100 + 124023004561 = 134490^2 + 352169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142110564661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142110564661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142110564611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5465790936 + ... + 5465790961.

It is an arithmetic number, because the mean of its divisors is an integer number (38260536643).

Almost surely, 2^142110564661 is an apocalyptic number.

It is an amenable number.

142110564661 is a deficient number, since it is larger than the sum of its proper divisors (10931581911).

142110564661 is a wasteful number, since it uses less digits than its factorization.

142110564661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10931581910.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 142110564661 in words is "one hundred forty-two billion, one hundred ten million, five hundred sixty-four thousand, six hundred sixty-one".