342651 has 4 divisors (see below), whose sum is σ = 456872. Its totient is φ = 228432.

The previous prime is 342647. The next prime is 342653. The reversal of 342651 is 156243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156243 = 3 ⋅52081.

It is not a de Polignac number, because 342651 - 2² = 342647 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342651.

It is not an unprimeable number, because it can be changed into a prime (342653) 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, 57106 + ... + 57111.

It is an arithmetic number, because the mean of its divisors is an integer number (114218).

2³⁴²⁶⁵¹ is an apocalyptic number.

342651 is a deficient number, since it is larger than the sum of its proper divisors (114221).

342651 is a wasteful number, since it uses less digits than its factorization.

342651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114220.

The product of its digits is 720, while the sum is 21.

The square root of 342651 is about 585.3639893263. The cubic root of 342651 is about 69.9762504466.

Adding to 342651 its reverse (156243), we get a palindrome (498894).

The spelling of 342651 in words is "three hundred forty-two thousand, six hundred fifty-one".