342491 has 4 divisors (see below), whose sum is σ = 345984. Its totient is φ = 339000.

The previous prime is 342481. The next prime is 342497. The reversal of 342491 is 194243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194243 = 7 ⋅27749.

It is a cyclic number.

It is not a de Polignac number, because 342491 - 2¹⁸ = 80347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595 + ... + 1796.

It is an arithmetic number, because the mean of its divisors is an integer number (86496).

2³⁴²⁴⁹¹ is an apocalyptic number.

342491 is a deficient number, since it is larger than the sum of its proper divisors (3493).

342491 is a wasteful number, since it uses less digits than its factorization.

342491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492.

The product of its digits is 864, while the sum is 23.

The square root of 342491 is about 585.2273062665. The cubic root of 342491 is about 69.9653570077.

The spelling of 342491 in words is "three hundred forty-two thousand, four hundred ninety-one".