2421421142140 has 384 divisors, whose sum is σ = 6872616253440. Its totient is φ = 692076441600.

The previous prime is 2421421142111. The next prime is 2421421142191. The reversal of 2421421142140 is 412411241242.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2421421142099 and 2421421142108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2985722335 + ... + 2985723145.

It is an arithmetic number, because the mean of its divisors is an integer number (17897438160).

Almost surely, 2^{2421421142140} is an apocalyptic number.

2421421142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421421142140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3436308126720).

2421421142140 is an abundant number, since it is smaller than the sum of its proper divisors (4451195111300).

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

2421421142140 is a wasteful number, since it uses less digits than its factorization.

2421421142140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 2421421142140 its reverse (412411241242), we get a palindrome (2833832383382).

The spelling of 2421421142140 in words is "two trillion, four hundred twenty-one billion, four hundred twenty-one million, one hundred forty-two thousand, one hundred forty".