121643124 has 24 divisors (see below), whose sum is σ = 291506208. Its totient is φ = 39451680.

The previous prime is 121643099. The next prime is 121643131. The reversal of 121643124 is 421346121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121643094 and 121643103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136542 + ... + 137429.

It is an arithmetic number, because the mean of its divisors is an integer number (12146092).

Almost surely, 2^121643124 is an apocalyptic number.

It is an amenable number.

121643124 is an abundant number, since it is smaller than the sum of its proper divisors (169863084).

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

121643124 is a wasteful number, since it uses less digits than its factorization.

121643124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274015 (or 274013 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 121643124 is about 11029.1941682065. The cubic root of 121643124 is about 495.4834904586.

Adding to 121643124 its reverse (421346121), we get a palindrome (542989245).

The spelling of 121643124 in words is "one hundred twenty-one million, six hundred forty-three thousand, one hundred twenty-four".