342540949 has 4 divisors (see below), whose sum is σ = 360569440. Its totient is φ = 324512460.

The previous prime is 342540943. The next prime is 342540959. The reversal of 342540949 is 949045243.

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, and also an emirpimes, since its reverse is a distinct semiprime: 949045243 = 3001 ⋅316243.

It is a cyclic number.

It is not a de Polignac number, because 342540949 - 2¹¹ = 342538901 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 (342540943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9014217 + ... + 9014254.

It is an arithmetic number, because the mean of its divisors is an integer number (90142360).

Almost surely, 2^342540949 is an apocalyptic number.

It is an amenable number.

342540949 is a deficient number, since it is larger than the sum of its proper divisors (18028491).

342540949 is a wasteful number, since it uses less digits than its factorization.

342540949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18028490.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 342540949 is about 18507.8618159959. The cubic root of 342540949 is about 699.6875809923.

The spelling of 342540949 in words is "three hundred forty-two million, five hundred forty thousand, nine hundred forty-nine".