72342 has 12 divisors (see below), whose sum is σ = 156780. Its totient is φ = 24108.

The previous prime is 72341. The next prime is 72353. The reversal of 72342 is 24327.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 4019 = 72342 / (7 + 2 + 3 + 4 + 2).

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1992 + ... + 2027.

It is an arithmetic number, because the mean of its divisors is an integer number (13065).

2⁷²³⁴² is an apocalyptic number.

72342 is an abundant number, since it is smaller than the sum of its proper divisors (84438).

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

72342 is a wasteful number, since it uses less digits than its factorization.

72342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027 (or 4024 counting only the distinct ones).

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

The square root of 72342 is about 268.9646816963. The cubic root of 72342 is about 41.6674417634.

Adding to 72342 its reverse (24327), we get a palindrome (96669).

It can be divided in two parts, 72 and 342, that added together give a palindrome (414).

The spelling of 72342 in words is "seventy-two thousand, three hundred forty-two", and thus it is an iban number.