2642110421 has 2 divisors, whose sum is σ = 2642110422. Its totient is φ = 2642110420.

The previous prime is 2642110391. The next prime is 2642110423. The reversal of 2642110421 is 1240112462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1596881521 + 1045228900 = 39961^2 + 32330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642110421 - 2¹⁸ = 2641848277 is a prime.

Together with 2642110423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642110423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321055210 + 1321055211.

It is an arithmetic number, because the mean of its divisors is an integer number (1321055211).

Almost surely, 2^2642110421 is an apocalyptic number.

It is an amenable number.

2642110421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642110421 is an equidigital number, since it uses as much as digits as its factorization.

2642110421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2642110421 is about 51401.4632184727. The cubic root of 2642110421 is about 1382.4528282723.

Adding to 2642110421 its reverse (1240112462), we get a palindrome (3882222883).

The spelling of 2642110421 in words is "two billion, six hundred forty-two million, one hundred ten thousand, four hundred twenty-one".