342780939 has 12 divisors (see below), whose sum is σ = 495835600. Its totient is φ = 228194064.

The previous prime is 342780871. The next prime is 342780943. The reversal of 342780939 is 939087243.

It is a happy number.

It is not a de Polignac number, because 342780939 - 2¹³ = 342772747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342780894 and 342780903.

It is not an unprimeable number, because it can be changed into a prime (342730939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20479 + ... + 33240.

Almost surely, 2^342780939 is an apocalyptic number.

342780939 is a deficient number, since it is larger than the sum of its proper divisors (153054661).

342780939 is a wasteful number, since it uses less digits than its factorization.

342780939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54434 (or 54431 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 342780939 is about 18514.3441417729. The cubic root of 342780939 is about 699.8509471756.

The spelling of 342780939 in words is "three hundred forty-two million, seven hundred eighty thousand, nine hundred thirty-nine".