1142823530161 has 4 divisors (see below), whose sum is σ = 1146098096500. Its totient is φ = 1139548963824.

The previous prime is 1142823530159. The next prime is 1142823530171. The reversal of 1142823530161 is 1610353282411.

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 478076827761 + 664746702400 = 691431^2 + 815320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142823530161 - 2¹ = 1142823530159 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 1142823530161.

It is not an unprimeable number, because it can be changed into a prime (1142823530171) 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 3 ways as a sum of consecutive naturals, for example, 1637282646 + ... + 1637283343.

It is an arithmetic number, because the mean of its divisors is an integer number (286524524125).

Almost surely, 2^{1142823530161} is an apocalyptic number.

It is an amenable number.

1142823530161 is a deficient number, since it is larger than the sum of its proper divisors (3274566339).

1142823530161 is an equidigital number, since it uses as much as digits as its factorization.

1142823530161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274566338.

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

The spelling of 1142823530161 in words is "one trillion, one hundred forty-two billion, eight hundred twenty-three million, five hundred thirty thousand, one hundred sixty-one".