1290520703 has 2 divisors, whose sum is σ = 1290520704. Its totient is φ = 1290520702.

The previous prime is 1290520667. The next prime is 1290520709. The reversal of 1290520703 is 3070250921.

It is a strong prime.

It is an emirp because it is prime and its reverse (3070250921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1290520703 - 2¹⁰ = 1290519679 is a prime.

It is a super-2 number, since 2×1290520703² = 3330887369743228418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290520709) 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, 645260351 + 645260352.

It is an arithmetic number, because the mean of its divisors is an integer number (645260352).

Almost surely, 2^1290520703 is an apocalyptic number.

1290520703 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290520703 is an equidigital number, since it uses as much as digits as its factorization.

1290520703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1290520703 is about 35923.8180459706. The cubic root of 1290520703 is about 1088.7336816155.

The spelling of 1290520703 in words is "one billion, two hundred ninety million, five hundred twenty thousand, seven hundred three".