121424240404 has 6 divisors (see below), whose sum is σ = 212492420714. Its totient is φ = 60712120200.

The previous prime is 121424240393. The next prime is 121424240429. The reversal of 121424240404 is 404042424121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121117920400 + 306320004 = 348020^2 + 17502^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15178030047 + ... + 15178030054.

Almost surely, 2^121424240404 is an apocalyptic number.

It is an amenable number.

121424240404 is a deficient number, since it is larger than the sum of its proper divisors (91068180310).

121424240404 is a wasteful number, since it uses less digits than its factorization.

121424240404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30356060105 (or 30356060103 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 121424240404 its reverse (404042424121), we get a palindrome (525466664525).

The spelling of 121424240404 in words is "one hundred twenty-one billion, four hundred twenty-four million, two hundred forty thousand, four hundred four".