121624 has 16 divisors (see below), whose sum is σ = 238320. Its totient is φ = 58080.

The previous prime is 121621. The next prime is 121631. The reversal of 121624 is 426121.

It is a junction number, because it is equal to n+sod(n) for n = 121598 and 121607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121621) 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, 147 + ... + 514.

It is an arithmetic number, because the mean of its divisors is an integer number (14895).

2¹²¹⁶²⁴ is an apocalyptic number.

It is an amenable number.

121624 is a deficient number, since it is larger than the sum of its proper divisors (116696).

121624 is a wasteful number, since it uses less digits than its factorization.

121624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 686 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 121624 is about 348.7463261455. The cubic root of 121624 is about 49.5457523453.

Adding to 121624 its reverse (426121), we get a palindrome (547745).

The spelling of 121624 in words is "one hundred twenty-one thousand, six hundred twenty-four".