342505249 has 2 divisors, whose sum is σ = 342505250. Its totient is φ = 342505248.

The previous prime is 342505243. The next prime is 342505253. The reversal of 342505249 is 942505243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287641600 + 54863649 = 16960^2 + 7407^2 .

It is a cyclic number.

It is not a de Polignac number, because 342505249 - 2²¹ = 340408097 is a prime.

It is not a weakly prime, because it can be changed into another prime (342505243) 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, 171252624 + 171252625.

It is an arithmetic number, because the mean of its divisors is an integer number (171252625).

Almost surely, 2^342505249 is an apocalyptic number.

It is an amenable number.

342505249 is a deficient number, since it is larger than the sum of its proper divisors (1).

342505249 is an equidigital number, since it uses as much as digits as its factorization.

342505249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 342505249 is about 18506.8973358583. The cubic root of 342505249 is about 699.6632727409.

The spelling of 342505249 in words is "three hundred forty-two million, five hundred five thousand, two hundred forty-nine".