121340423424 has 72 divisors (see below), whose sum is σ = 352300912992. Its totient is φ = 36769822720.

The previous prime is 121340423419. The next prime is 121340423461. The reversal of 121340423424 is 424324043121.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 121340423391 and 121340423400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7173159 + ... + 7190054.

It is an arithmetic number, because the mean of its divisors is an integer number (4893068236).

Almost surely, 2^121340423424 is an apocalyptic number.

It is an amenable number.

121340423424 is an abundant number, since it is smaller than the sum of its proper divisors (230960489568).

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

121340423424 is a wasteful number, since it uses less digits than its factorization.

121340423424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14363243 (or 14363229 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 121340423424 its reverse (424324043121), we get a palindrome (545664466545).

The spelling of 121340423424 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-three thousand, four hundred twenty-four".