1020740043 has 4 divisors (see below), whose sum is σ = 1360986728. Its totient is φ = 680493360.

The previous prime is 1020740041. The next prime is 1020740051. The reversal of 1020740043 is 3400470201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3400470201 = 3 ⋅1133490067.

It is not a de Polignac number, because 1020740043 - 2¹ = 1020740041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020740041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170123338 + ... + 170123343.

It is an arithmetic number, because the mean of its divisors is an integer number (340246682).

Almost surely, 2^1020740043 is an apocalyptic number.

1020740043 is a deficient number, since it is larger than the sum of its proper divisors (340246685).

1020740043 is an equidigital number, since it uses as much as digits as its factorization.

1020740043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340246684.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1020740043 is about 31949.0225672085. The cubic root of 1020740043 is about 1006.8660964889.

The spelling of 1020740043 in words is "one billion, twenty million, seven hundred forty thousand, forty-three".