756342 has 12 divisors (see below), whose sum is σ = 1638780. Its totient is φ = 252108.

The previous prime is 756331. The next prime is 756373. The reversal of 756342 is 243657.

It is a happy number.

756342 is nontrivially palindromic in base 7.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 756342.

It is an unprimeable number.

756342 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 5 ways as a sum of consecutive naturals, for example, 20992 + ... + 21027.

It is an arithmetic number, because the mean of its divisors is an integer number (136565).

2⁷⁵⁶³⁴² is an apocalyptic number.

756342 is an abundant number, since it is smaller than the sum of its proper divisors (882438).

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

756342 is a wasteful number, since it uses less digits than its factorization.

756342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42027 (or 42024 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 756342 is about 869.6792512185. The cubic root of 756342 is about 91.1114040355. Note that the first 3 decimals are identical.

Adding to 756342 its reverse (243657), we get a palindrome (999999).

The spelling of 756342 in words is "seven hundred fifty-six thousand, three hundred forty-two".