1042728919 has 2 divisors, whose sum is σ = 1042728920. Its totient is φ = 1042728918.

The previous prime is 1042728871. The next prime is 1042728923. The reversal of 1042728919 is 9198272401.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1042728919 - 2¹³ = 1042720727 is a prime.

It is a super-2 number, since 2×1042728919² = 2174567197037817122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042728719) 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, 521364459 + 521364460.

It is an arithmetic number, because the mean of its divisors is an integer number (521364460).

Almost surely, 2^1042728919 is an apocalyptic number.

1042728919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042728919 is an equidigital number, since it uses as much as digits as its factorization.

1042728919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1042728919 is about 32291.3133675297. The cubic root of 1042728919 is about 1014.0447933067.

The spelling of 1042728919 in words is "one billion, forty-two million, seven hundred twenty-eight thousand, nine hundred nineteen".