12421401342402 has 32 divisors (see below), whose sum is σ = 27054391875840. Its totient is φ = 3779026162560.

The previous prime is 12421401342401. The next prime is 12421401342487. The reversal of 12421401342402 is 20424310412421.

It is a super-3 number, since 3×12421401342402³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12421401342402.

It is not an unprimeable number, because it can be changed into a prime (12421401342401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894648874 + ... + 894662757.

It is an arithmetic number, because the mean of its divisors is an integer number (845449746120).

Almost surely, 2^{12421401342402} is an apocalyptic number.

12421401342402 is an abundant number, since it is smaller than the sum of its proper divisors (14632990533438).

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

12421401342402 is a wasteful number, since it uses less digits than its factorization.

12421401342402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789311738.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 12421401342402 its reverse (20424310412421), we get a palindrome (32845711754823).

The spelling of 12421401342402 in words is "twelve trillion, four hundred twenty-one billion, four hundred one million, three hundred forty-two thousand, four hundred two".