9780342 has 32 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 2735520.

The previous prime is 9780341. The next prime is 9780343. The reversal of 9780342 is 2430879.

It is an interprime number because it is at equal distance from previous prime (9780341) and next prime (9780343).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780341) 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 15 ways as a sum of consecutive naturals, for example, 4842 + ... + 6557.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^9780342 is an apocalyptic number.

9780342 is an abundant number, since it is smaller than the sum of its proper divisors (13202058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9780342 is a wasteful number, since it uses less digits than its factorization.

9780342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 9780342 is about 3127.3538335148. The cubic root of 9780342 is about 213.8543131632.

Adding to 9780342 its reverse (2430879), we get a palindrome (12211221).

The spelling of 9780342 in words is "nine million, seven hundred eighty thousand, three hundred forty-two".