1742660243 has 2 divisors, whose sum is σ = 1742660244. Its totient is φ = 1742660242.

The previous prime is 1742660237. The next prime is 1742660263. The reversal of 1742660243 is 3420662471.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1742660243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1742660263) 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, 871330121 + 871330122.

It is an arithmetic number, because the mean of its divisors is an integer number (871330122).

Almost surely, 2^1742660243 is an apocalyptic number.

1742660243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1742660243 is an equidigital number, since it uses as much as digits as its factorization.

1742660243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 1742660243 is about 41745.1822729282. The cubic root of 1742660243 is about 1203.3840227895.

The spelling of 1742660243 in words is "one billion, seven hundred forty-two million, six hundred sixty thousand, two hundred forty-three".