342090493 has 4 divisors (see below), whose sum is σ = 351336220. Its totient is φ = 332844768.

The previous prime is 342090491. The next prime is 342090503. The reversal of 342090493 is 394090243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394090243 = 17 ⋅23181779.

It can be written as a sum of positive squares in 2 ways, for example, as 157076089 + 185014404 = 12533^2 + 13602^2 .

It is a cyclic number.

It is not a de Polignac number, because 342090493 - 2¹ = 342090491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342090491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4622808 + ... + 4622881.

It is an arithmetic number, because the mean of its divisors is an integer number (87834055).

Almost surely, 2^342090493 is an apocalyptic number.

It is an amenable number.

342090493 is a deficient number, since it is larger than the sum of its proper divisors (9245727).

342090493 is an equidigital number, since it uses as much as digits as its factorization.

342090493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245726.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 342090493 is about 18495.6884975932. The cubic root of 342090493 is about 699.3807400840.

The spelling of 342090493 in words is "three hundred forty-two million, ninety thousand, four hundred ninety-three".