121340124 has 36 divisors (see below), whose sum is σ = 308509656. Its totient is φ = 40210848.

The previous prime is 121340123. The next prime is 121340159. The reversal of 121340124 is 421043121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121340097 and 121340106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3514 + ... + 15969.

Almost surely, 2^121340124 is an apocalyptic number.

It is an amenable number.

121340124 is an abundant number, since it is smaller than the sum of its proper divisors (187169532).

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

121340124 is a wasteful number, since it uses less digits than its factorization.

121340124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19666 (or 19661 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121340124 is about 11015.4493326419. The cubic root of 121340124 is about 495.0717496240.

Adding to 121340124 its reverse (421043121), we get a palindrome (542383245).

The spelling of 121340124 in words is "one hundred twenty-one million, three hundred forty thousand, one hundred twenty-four".