3120742489 has 2 divisors, whose sum is σ = 3120742490. Its totient is φ = 3120742488.

The previous prime is 3120742447. The next prime is 3120742543. The reversal of 3120742489 is 9842470213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2973848089 + 146894400 = 54533^2 + 12120^2 .

It is an emirp because it is prime and its reverse (9842470213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3120742489 - 2¹⁵ = 3120709721 is a prime.

It is not a weakly prime, because it can be changed into another prime (3120742789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560371244 + 1560371245.

It is an arithmetic number, because the mean of its divisors is an integer number (1560371245).

Almost surely, 2^3120742489 is an apocalyptic number.

It is an amenable number.

3120742489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120742489 is an equidigital number, since it uses as much as digits as its factorization.

3120742489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 3120742489 is about 55863.6061224121. The cubic root of 3120742489 is about 1461.3446186795.

The spelling of 3120742489 in words is "three billion, one hundred twenty million, seven hundred forty-two thousand, four hundred eighty-nine".