342985547 has 2 divisors, whose sum is σ = 342985548. Its totient is φ = 342985546.

The previous prime is 342985543. The next prime is 342985583. The reversal of 342985547 is 745589243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342985547 - 2² = 342985543 is a prime.

It is not a weakly prime, because it can be changed into another prime (342985543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171492773 + 171492774.

It is an arithmetic number, because the mean of its divisors is an integer number (171492774).

Almost surely, 2^342985547 is an apocalyptic number.

342985547 is a deficient number, since it is larger than the sum of its proper divisors (1).

342985547 is an equidigital number, since it uses as much as digits as its factorization.

342985547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 342985547 is about 18519.8689790182. The cubic root of 342985547 is about 699.9901678891.

The spelling of 342985547 in words is "three hundred forty-two million, nine hundred eighty-five thousand, five hundred forty-seven".