342745 has 8 divisors (see below), whose sum is σ = 443016. Its totient is φ = 253056.

The previous prime is 342733. The next prime is 342757. The reversal of 342745 is 547243.

It is an interprime number because it is at equal distance from previous prime (342733) and next prime (342757).

It can be written as a sum of positive squares in 4 ways, for example, as 5184 + 337561 = 72^2 + 581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 342745 - 2⁹ = 342233 is a prime.

It is a d-powerful number, because it can be written as 3⁴ + 4 + 7³ + 2¹¹ + 4⁹ + 5⁷ .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2572 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (55377).

2³⁴²⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

342745 is a deficient number, since it is larger than the sum of its proper divisors (100271).

342745 is a wasteful number, since it uses less digits than its factorization.

342745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291.

The product of its digits is 3360, while the sum is 25.

The square root of 342745 is about 585.4442757428. Note that the first 3 decimals coincide. The cubic root of 342745 is about 69.9826487606.

Adding to 342745 its reverse (547243), we get a palindrome (889988).

The spelling of 342745 in words is "three hundred forty-two thousand, seven hundred forty-five".