1042947361 has 2 divisors, whose sum is σ = 1042947362. Its totient is φ = 1042947360.

The previous prime is 1042947359. The next prime is 1042947391. The reversal of 1042947361 is 1637492401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 873557136 + 169390225 = 29556^2 + 13015^2 .

It is an emirp because it is prime and its reverse (1637492401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042947361 - 2¹ = 1042947359 is a prime.

Together with 1042947359, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1042947361.

It is not a weakly prime, because it can be changed into another prime (1042947341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521473680 + 521473681.

It is an arithmetic number, because the mean of its divisors is an integer number (521473681).

Almost surely, 2^1042947361 is an apocalyptic number.

It is an amenable number.

1042947361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042947361 is an equidigital number, since it uses as much as digits as its factorization.

1042947361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1042947361 is about 32294.6955551527. The cubic root of 1042947361 is about 1014.1155993434.

The spelling of 1042947361 in words is "one billion, forty-two million, nine hundred forty-seven thousand, three hundred sixty-one".