142181024005 has 8 divisors (see below), whose sum is σ = 170622127512. Its totient is φ = 113741553408.

The previous prime is 142181024003. The next prime is 142181024009. The reversal of 142181024005 is 500420181241.

It can be written as a sum of positive squares in 4 ways, for example, as 52229617444 + 89951406561 = 228538^2 + 299919^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142181024005 - 2¹ = 142181024003 is a prime.

It is a super-2 number, since 2×142181024005² (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 (142181024003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207712 + ... + 572281.

It is an arithmetic number, because the mean of its divisors is an integer number (21327765939).

Almost surely, 2^142181024005 is an apocalyptic number.

It is an amenable number.

142181024005 is a deficient number, since it is larger than the sum of its proper divisors (28441103507).

142181024005 is an equidigital number, since it uses as much as digits as its factorization.

142181024005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816455.

The product of its (nonzero) digits is 2560, while the sum is 28.

The spelling of 142181024005 in words is "one hundred forty-two billion, one hundred eighty-one million, twenty-four thousand, five".