121413431424 has 64 divisors (see below), whose sum is σ = 332907828480. Its totient is φ = 39165619200.

The previous prime is 121413431423. The next prime is 121413431431. The reversal of 121413431424 is 424134314121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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 = 121413431391 and 121413431400.

It is not an unprimeable number, because it can be changed into a prime (121413431423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5087787 + ... + 5111594.

It is an arithmetic number, because the mean of its divisors is an integer number (5201684820).

Almost surely, 2^121413431424 is an apocalyptic number.

It is an amenable number.

121413431424 is an abundant number, since it is smaller than the sum of its proper divisors (211494397056).

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

121413431424 is a wasteful number, since it uses less digits than its factorization.

121413431424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10199429 (or 10199417 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 121413431424 its reverse (424134314121), we get a palindrome (545547745545).

The spelling of 121413431424 in words is "one hundred twenty-one billion, four hundred thirteen million, four hundred thirty-one thousand, four hundred twenty-four".