342780481 has 2 divisors, whose sum is σ = 342780482. Its totient is φ = 342780480.

The previous prime is 342780467. The next prime is 342780491. The reversal of 342780481 is 184087243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334890000 + 7890481 = 18300^2 + 2809^2 .

It is an emirp because it is prime and its reverse (184087243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342780481 - 2¹¹ = 342778433 is a prime.

It is a super-2 number, since 2×342780481² = 234996916309182722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 342780481.

It is not a weakly prime, because it can be changed into another prime (342780491) 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 as a sum of consecutive naturals, namely, 171390240 + 171390241.

It is an arithmetic number, because the mean of its divisors is an integer number (171390241).

Almost surely, 2^342780481 is an apocalyptic number.

It is an amenable number.

342780481 is a deficient number, since it is larger than the sum of its proper divisors (1).

342780481 is an equidigital number, since it uses as much as digits as its factorization.

342780481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 342780481 is about 18514.3317729806. The cubic root of 342780481 is about 699.8506354781.

The spelling of 342780481 in words is "three hundred forty-two million, seven hundred eighty thousand, four hundred eighty-one".