1042290989 has 2 divisors, whose sum is σ = 1042290990. Its totient is φ = 1042290988.

The previous prime is 1042290979. The next prime is 1042291031. The reversal of 1042290989 is 9890922401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034908900 + 7382089 = 32170^2 + 2717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042290989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042290979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521145494 + 521145495.

It is an arithmetic number, because the mean of its divisors is an integer number (521145495).

Almost surely, 2^1042290989 is an apocalyptic number.

It is an amenable number.

1042290989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042290989 is an equidigital number, since it uses as much as digits as its factorization.

1042290989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1042290989 is about 32284.5317296070. The cubic root of 1042290989 is about 1013.9028123911.

The spelling of 1042290989 in words is "one billion, forty-two million, two hundred ninety thousand, nine hundred eighty-nine".