142021212044405 has 8 divisors (see below), whose sum is σ = 176302194262200. Its totient is φ = 109699143096256.

The previous prime is 142021212044377. The next prime is 142021212044407. The reversal of 142021212044405 is 504440212120241.

It can be written as a sum of positive squares in 4 ways, for example, as 60634363255249 + 81386848789156 = 7786807^2 + 9021466^2 .

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 142021212044405 - 2¹⁶ = 142021211978869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142021212044407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489728317250 + ... + 489728317539.

It is an arithmetic number, because the mean of its divisors is an integer number (22037774282775).

Almost surely, 2^{142021212044405} is an apocalyptic number.

It is an amenable number.

142021212044405 is a deficient number, since it is larger than the sum of its proper divisors (34280982217795).

142021212044405 is an equidigital number, since it uses as much as digits as its factorization.

142021212044405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979456634823.

The product of its (nonzero) digits is 20480, while the sum is 32.

Adding to 142021212044405 its reverse (504440212120241), we get a palindrome (646461424164646).

The spelling of 142021212044405 in words is "one hundred forty-two trillion, twenty-one billion, two hundred twelve million, forty-four thousand, four hundred five".