1042345439 has 2 divisors, whose sum is σ = 1042345440. Its totient is φ = 1042345438.

The previous prime is 1042345417. The next prime is 1042345481. The reversal of 1042345439 is 9345432401.

It is a weak prime.

It is an emirp because it is prime and its reverse (9345432401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042345439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1042345399 and 1042345408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042345489) 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, 521172719 + 521172720.

It is an arithmetic number, because the mean of its divisors is an integer number (521172720).

Almost surely, 2^1042345439 is an apocalyptic number.

1042345439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042345439 is an equidigital number, since it uses as much as digits as its factorization.

1042345439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1042345439 is about 32285.3750016939. The cubic root of 1042345439 is about 1013.9204677444.

The spelling of 1042345439 in words is "one billion, forty-two million, three hundred forty-five thousand, four hundred thirty-nine".