2340042989 has 2 divisors, whose sum is σ = 2340042990. Its totient is φ = 2340042988.

The previous prime is 2340042953. The next prime is 2340043007. The reversal of 2340042989 is 9892400432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2303040100 + 37002889 = 47990^2 + 6083^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340042989 - 2¹² = 2340038893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2340048989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170021494 + 1170021495.

It is an arithmetic number, because the mean of its divisors is an integer number (1170021495).

Almost surely, 2^2340042989 is an apocalyptic number.

It is an amenable number.

2340042989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340042989 is an equidigital number, since it uses as much as digits as its factorization.

2340042989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 2340042989 is about 48373.9908318510. The cubic root of 2340042989 is about 1327.6225242426.

The spelling of 2340042989 in words is "two billion, three hundred forty million, forty-two thousand, nine hundred eighty-nine".