780042727 has 2 divisors, whose sum is σ = 780042728. Its totient is φ = 780042726.

The previous prime is 780042721. The next prime is 780042737. The reversal of 780042727 is 727240087.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 780042727 - 2²⁷ = 645824999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780042721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390021363 + 390021364.

It is an arithmetic number, because the mean of its divisors is an integer number (390021364).

Almost surely, 2^780042727 is an apocalyptic number.

780042727 is a deficient number, since it is larger than the sum of its proper divisors (1).

780042727 is an equidigital number, since it uses as much as digits as its factorization.

780042727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 780042727 is about 27929.2450130683. The cubic root of 780042727 is about 920.5332160236.

The spelling of 780042727 in words is "seven hundred eighty million, forty-two thousand, seven hundred twenty-seven".