210342 has 16 divisors (see below), whose sum is σ = 459072. Its totient is φ = 63720.

The previous prime is 210323. The next prime is 210347. The reversal of 210342 is 243012.

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 210342.

It is not an unprimeable number, because it can be changed into a prime (210347) by changing a digit.

210342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1528 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (28692).

2²¹⁰³⁴² is an apocalyptic number.

210342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210342 is an abundant number, since it is smaller than the sum of its proper divisors (248730).

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

210342 is a wasteful number, since it uses less digits than its factorization.

210342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 210342 is about 458.6305702851. The cubic root of 210342 is about 59.4714690320.

Adding to 210342 its reverse (243012), we get a palindrome (453354).

It can be divided in two parts, 2103 and 42, that added together give a triangular number (2145 = T₆₅).

The spelling of 210342 in words is "two hundred ten thousand, three hundred forty-two", and thus it is an iban number.