121040424 has 48 divisors (see below), whose sum is σ = 332322900. Its totient is φ = 39792384.

The previous prime is 121040419. The next prime is 121040443. The reversal of 121040424 is 424040121.

It can be written as a sum of positive squares in 2 ways, for example, as 112148100 + 8892324 = 10590^2 + 2982^2 .

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 = 121040397 and 121040406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6259 + ... + 16770.

Almost surely, 2^121040424 is an apocalyptic number.

It is an amenable number.

121040424 is an abundant number, since it is smaller than the sum of its proper divisors (211282476).

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

121040424 is a wasteful number, since it uses less digits than its factorization.

121040424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23114 (or 23107 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 121040424 is about 11001.8373011057. The cubic root of 121040424 is about 494.6638182580.

Adding to 121040424 its reverse (424040121), we get a palindrome (545080545).

The spelling of 121040424 in words is "one hundred twenty-one million, forty thousand, four hundred twenty-four".