2662242421 has 2 divisors, whose sum is σ = 2662242422. Its totient is φ = 2662242420.

The previous prime is 2662242419. The next prime is 2662242467. The reversal of 2662242421 is 1242422662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1512354321 + 1149888100 = 38889^2 + 33910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2662242421 - 2¹ = 2662242419 is a prime.

Together with 2662242419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2662242481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331121210 + 1331121211.

It is an arithmetic number, because the mean of its divisors is an integer number (1331121211).

Almost surely, 2^2662242421 is an apocalyptic number.

It is an amenable number.

2662242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2662242421 is an equidigital number, since it uses as much as digits as its factorization.

2662242421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 31.

The square root of 2662242421 is about 51596.9225923407. The cubic root of 2662242421 is about 1385.9552240372.

The spelling of 2662242421 in words is "two billion, six hundred sixty-two million, two hundred forty-two thousand, four hundred twenty-one".