121442 has 8 divisors (see below), whose sum is σ = 186732. Its totient is φ = 59200.

The previous prime is 121441. The next prime is 121447. The reversal of 121442 is 244121.

It can be written as a sum of positive squares in 2 ways, for example, as 109561 + 11881 = 331^2 + 109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121442.

It is not an unprimeable number, because it can be changed into a prime (121441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659 + ... + 822.

2¹²¹⁴⁴² is an apocalyptic number.

121442 is a deficient number, since it is larger than the sum of its proper divisors (65290).

121442 is a wasteful number, since it uses less digits than its factorization.

121442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524.

The product of its digits is 64, while the sum is 14.

The square root of 121442 is about 348.4852938074. The cubic root of 121442 is about 49.5210263358.

Adding to 121442 its reverse (244121), we get a palindrome (365563).

The spelling of 121442 in words is "one hundred twenty-one thousand, four hundred forty-two", and thus it is an iban number.