342840149 has 4 divisors (see below), whose sum is σ = 342898080. Its totient is φ = 342782220.

The previous prime is 342840119. The next prime is 342840151. The reversal of 342840149 is 941048243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342840149 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 (342840109) 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, 18929 + ... + 32310.

It is an arithmetic number, because the mean of its divisors is an integer number (85724520).

Almost surely, 2^342840149 is an apocalyptic number.

It is an amenable number.

342840149 is a deficient number, since it is larger than the sum of its proper divisors (57931).

342840149 is an equidigital number, since it uses as much as digits as its factorization.

342840149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57930.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 342840149 is about 18515.9431031746. The cubic root of 342840149 is about 699.8912409261.

The spelling of 342840149 in words is "three hundred forty-two million, eight hundred forty thousand, one hundred forty-nine".