342749215 has 4 divisors (see below), whose sum is σ = 411299064. Its totient is φ = 274199368.

The previous prime is 342749213. The next prime is 342749249. The reversal of 342749215 is 512947243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 342749215 - 2¹ = 342749213 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 (342749213) 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, 34274917 + ... + 34274926.

It is an arithmetic number, because the mean of its divisors is an integer number (102824766).

Almost surely, 2^342749215 is an apocalyptic number.

342749215 is a deficient number, since it is larger than the sum of its proper divisors (68549849).

342749215 is an equidigital number, since it uses as much as digits as its factorization.

342749215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68549848.

The product of its digits is 60480, while the sum is 37.

The square root of 342749215 is about 18513.4873808259. The cubic root of 342749215 is about 699.8293563636.

The spelling of 342749215 in words is "three hundred forty-two million, seven hundred forty-nine thousand, two hundred fifteen".