320742 has 24 divisors (see below), whose sum is σ = 705744. Its totient is φ = 105264.

The previous prime is 320741. The next prime is 320759. The reversal of 320742 is 247023.

It is a happy number.

320742 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320741) 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, 1768 + ... + 1940.

It is an arithmetic number, because the mean of its divisors is an integer number (29406).

2³²⁰⁷⁴² is an apocalyptic number.

320742 is an abundant number, since it is smaller than the sum of its proper divisors (385002).

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

320742 is a wasteful number, since it uses less digits than its factorization.

320742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 320742 is about 566.3408867458. The cubic root of 320742 is about 68.4518638144.

Adding to 320742 its reverse (247023), we get a palindrome (567765).

It can be divided in two parts, 3207 and 42, that added together give a square (3249 = 57²).

The spelling of 320742 in words is "three hundred twenty thousand, seven hundred forty-two", and thus it is an iban number.