7842312 has 32 divisors (see below), whose sum is σ = 21784800. Its totient is φ = 2614032.

The previous prime is 7842299. The next prime is 7842323. The reversal of 7842312 is 2132487.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17938 + ... + 18369.

It is an arithmetic number, because the mean of its divisors is an integer number (680775).

Almost surely, 2^7842312 is an apocalyptic number.

7842312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7842312 is an abundant number, since it is smaller than the sum of its proper divisors (13942488).

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

7842312 is a wasteful number, since it uses less digits than its factorization.

7842312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36322 (or 36312 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 7842312 is about 2800.4128267097. The cubic root of 7842312 is about 198.6772036712.

Adding to 7842312 its reverse (2132487), we get a palindrome (9974799).

The spelling of 7842312 in words is "seven million, eight hundred forty-two thousand, three hundred twelve".