142804422461 has 4 divisors (see below), whose sum is σ = 143417317212. Its totient is φ = 142191527712.

The previous prime is 142804422419. The next prime is 142804422487. The reversal of 142804422461 is 164224408241.

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 14575974361 + 128228448100 = 120731^2 + 358090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142804422461 is a prime.

It is a super-2 number, since 2×142804422461² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142804422491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306447026 + ... + 306447491.

It is an arithmetic number, because the mean of its divisors is an integer number (35854329303).

Almost surely, 2^142804422461 is an apocalyptic number.

It is an amenable number.

142804422461 is a deficient number, since it is larger than the sum of its proper divisors (612894751).

142804422461 is an equidigital number, since it uses as much as digits as its factorization.

142804422461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612894750.

The product of its (nonzero) digits is 98304, while the sum is 38.

The spelling of 142804422461 in words is "one hundred forty-two billion, eight hundred four million, four hundred twenty-two thousand, four hundred sixty-one".