342720086881 has 2 divisors, whose sum is σ = 342720086882. Its totient is φ = 342720086880.

The previous prime is 342720086861. The next prime is 342720086893. The reversal of 342720086881 is 188680027243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294187996881 + 48532090000 = 542391^2 + 220300^2 .

It is an emirp because it is prime and its reverse (188680027243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342720086881 - 2¹⁵ = 342720054113 is a prime.

It is a super-2 number, since 2×342720086881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342720086861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171360043440 + 171360043441.

It is an arithmetic number, because the mean of its divisors is an integer number (171360043441).

Almost surely, 2^342720086881 is an apocalyptic number.

It is an amenable number.

342720086881 is a deficient number, since it is larger than the sum of its proper divisors (1).

342720086881 is an equidigital number, since it uses as much as digits as its factorization.

342720086881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 342720086881 in words is "three hundred forty-two billion, seven hundred twenty million, eighty-six thousand, eight hundred eighty-one".