2134242400421 has 4 divisors (see below), whose sum is σ = 2259786071052. Its totient is φ = 2008698729792.

The previous prime is 2134242400403. The next prime is 2134242400441. The reversal of 2134242400421 is 1240042424312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1918263780196 + 215978620225 = 1385014^2 + 464735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134242400421 - 2⁶ = 2134242400357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134242400441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62771835290 + ... + 62771835323.

It is an arithmetic number, because the mean of its divisors is an integer number (564946517763).

Almost surely, 2^{2134242400421} is an apocalyptic number.

It is an amenable number.

2134242400421 is a deficient number, since it is larger than the sum of its proper divisors (125543670631).

2134242400421 is a wasteful number, since it uses less digits than its factorization.

2134242400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125543670630.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2134242400421 its reverse (1240042424312), we get a palindrome (3374284824733).

The spelling of 2134242400421 in words is "two trillion, one hundred thirty-four billion, two hundred forty-two million, four hundred thousand, four hundred twenty-one".