1042388761 has 2 divisors, whose sum is σ = 1042388762. Its totient is φ = 1042388760.

The previous prime is 1042388729. The next prime is 1042388777. The reversal of 1042388761 is 1678832401.

1042388761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 569108736 + 473280025 = 23856^2 + 21755^2 .

It is an emirp because it is prime and its reverse (1678832401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042388761 - 2⁵ = 1042388729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042388261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521194380 + 521194381.

It is an arithmetic number, because the mean of its divisors is an integer number (521194381).

Almost surely, 2^1042388761 is an apocalyptic number.

It is an amenable number.

1042388761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042388761 is an equidigital number, since it uses as much as digits as its factorization.

1042388761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1042388761 is about 32286.0459177026. The cubic root of 1042388761 is about 1013.9345144165.

The spelling of 1042388761 in words is "one billion, forty-two million, three hundred eighty-eight thousand, seven hundred sixty-one".