121342 has 12 divisors (see below), whose sum is σ = 197640. Its totient is φ = 55848.

The previous prime is 121333. The next prime is 121343. The reversal of 121342 is 243121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121343) by changing a digit.

121342 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (16470).

2¹²¹³⁴² is an apocalyptic number.

121342 is a deficient number, since it is larger than the sum of its proper divisors (76298).

121342 is a wasteful number, since it uses less digits than its factorization.

121342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 374 counting only the distinct ones).

The product of its digits is 48, while the sum is 13.

The square root of 121342 is about 348.3417861813. The cubic root of 121342 is about 49.5074300992.

Adding to 121342 its reverse (243121), we get a palindrome (364463).

The spelling of 121342 in words is "one hundred twenty-one thousand, three hundred forty-two", and thus it is an iban number.