2134243043421 has 8 divisors (see below), whose sum is σ = 2856236044320. Its totient is φ = 1417539369072.

The previous prime is 2134243043417. The next prime is 2134243043453. The reversal of 2134243043421 is 1243403424312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2134243043421 - 2² = 2134243043417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134243043411) 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, 1322330695 + ... + 1322332308.

It is an arithmetic number, because the mean of its divisors is an integer number (357029505540).

Almost surely, 2^{2134243043421} is an apocalyptic number.

It is an amenable number.

2134243043421 is a deficient number, since it is larger than the sum of its proper divisors (721993000899).

2134243043421 is a wasteful number, since it uses less digits than its factorization.

2134243043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644663275.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 2134243043421 its reverse (1243403424312), we get a palindrome (3377646467733).

The spelling of 2134243043421 in words is "two trillion, one hundred thirty-four billion, two hundred forty-three million, forty-three thousand, four hundred twenty-one".