121404432340 has 48 divisors (see below), whose sum is σ = 266082340608. Its totient is φ = 46441961984.

The previous prime is 121404432319. The next prime is 121404432343. The reversal of 121404432340 is 43234404121.

It is a junction number, because it is equal to n+sod(n) for n = 121404432299 and 121404432308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121404432343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2901609 + ... + 2943151.

It is an arithmetic number, because the mean of its divisors is an integer number (5543382096).

Almost surely, 2^121404432340 is an apocalyptic number.

121404432340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121404432340 is an abundant number, since it is smaller than the sum of its proper divisors (144677908268).

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

121404432340 is a wasteful number, since it uses less digits than its factorization.

121404432340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47928 (or 47926 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 121404432340 its reverse (43234404121), we get a palindrome (164638836461).

The spelling of 121404432340 in words is "one hundred twenty-one billion, four hundred four million, four hundred thirty-two thousand, three hundred forty".