342447673 has 2 divisors, whose sum is σ = 342447674. Its totient is φ = 342447672.

The previous prime is 342447649. The next prime is 342447683. The reversal of 342447673 is 376744243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208744704 + 133702969 = 14448^2 + 11563^2 .

It is an emirp because it is prime and its reverse (376744243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342447673 - 2⁵ = 342447641 is a prime.

It is a super-2 number, since 2×342447673² = 234540817486229858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342447683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171223836 + 171223837.

It is an arithmetic number, because the mean of its divisors is an integer number (171223837).

Almost surely, 2^342447673 is an apocalyptic number.

It is an amenable number.

342447673 is a deficient number, since it is larger than the sum of its proper divisors (1).

342447673 is an equidigital number, since it uses as much as digits as its factorization.

342447673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 40.

The square root of 342447673 is about 18505.3417423186. The cubic root of 342447673 is about 699.6240654877.

The spelling of 342447673 in words is "three hundred forty-two million, four hundred forty-seven thousand, six hundred seventy-three".