121546 has 4 divisors (see below), whose sum is σ = 182322. Its totient is φ = 60772.

The previous prime is 121531. The next prime is 121547. The reversal of 121546 is 645121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645121 = 167 ⋅3863.

It can be written as a sum of positive squares in only one way, i.e., 83521 + 38025 = 289^2 + 195^2 .

It is not an unprimeable number, because it can be changed into a prime (121547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30385 + ... + 30388.

2¹²¹⁵⁴⁶ is an apocalyptic number.

121546 is a deficient number, since it is larger than the sum of its proper divisors (60776).

121546 is an equidigital number, since it uses as much as digits as its factorization.

121546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60775.

The product of its digits is 240, while the sum is 19.

The square root of 121546 is about 348.6344790751. The cubic root of 121546 is about 49.5351585066.

Adding to 121546 its reverse (645121), we get a palindrome (766667).

It can be divided in two parts, 121 and 546, that multiplied together give a palindrome (66066).

The spelling of 121546 in words is "one hundred twenty-one thousand, five hundred forty-six".