2340421999 has 2 divisors, whose sum is σ = 2340422000. Its totient is φ = 2340421998.

The previous prime is 2340421997. The next prime is 2340422041. The reversal of 2340421999 is 9991240432.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2340421999 - 2¹ = 2340421997 is a prime.

Together with 2340421997, 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 (2340421991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170210999 + 1170211000.

It is an arithmetic number, because the mean of its divisors is an integer number (1170211000).

Almost surely, 2^2340421999 is an apocalyptic number.

2340421999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340421999 is an equidigital number, since it uses as much as digits as its factorization.

2340421999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 2340421999 is about 48377.9081709823. The cubic root of 2340421999 is about 1327.6941974343.

The spelling of 2340421999 in words is "two billion, three hundred forty million, four hundred twenty-one thousand, nine hundred ninety-nine".