1240434079 has 2 divisors, whose sum is σ = 1240434080. Its totient is φ = 1240434078.

The previous prime is 1240434077. The next prime is 1240434127. The reversal of 1240434079 is 9704340421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240434079 - 2¹ = 1240434077 is a prime.

Together with 1240434077, 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 (1240434077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620217039 + 620217040.

It is an arithmetic number, because the mean of its divisors is an integer number (620217040).

Almost surely, 2^1240434079 is an apocalyptic number.

1240434079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240434079 is an equidigital number, since it uses as much as digits as its factorization.

1240434079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1240434079 is about 35219.7966916335. The cubic root of 1240434079 is about 1074.4624185037.

The spelling of 1240434079 in words is "one billion, two hundred forty million, four hundred thirty-four thousand, seventy-nine".