2340421231421 has 64 divisors (see below), whose sum is σ = 2915461226496. Its totient is φ = 1829479737600.

The previous prime is 2340421231361. The next prime is 2340421231439. The reversal of 2340421231421 is 1241321240432.

It is a cyclic number.

It is not a de Polignac number, because 2340421231421 - 2¹⁴ = 2340421215037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340421231471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2270049176 + ... + 2270050206.

It is an arithmetic number, because the mean of its divisors is an integer number (45554081664).

Almost surely, 2^{2340421231421} is an apocalyptic number.

It is an amenable number.

2340421231421 is a deficient number, since it is larger than the sum of its proper divisors (575039995075).

2340421231421 is a wasteful number, since it uses less digits than its factorization.

2340421231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 2340421231421 its reverse (1241321240432), we get a palindrome (3581742471853).

The spelling of 2340421231421 in words is "two trillion, three hundred forty billion, four hundred twenty-one million, two hundred thirty-one thousand, four hundred twenty-one".