1020124243 has 4 divisors (see below), whose sum is σ = 1023807280. Its totient is φ = 1016441208.

The previous prime is 1020124229. The next prime is 1020124247. The reversal of 1020124243 is 3424210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020124243 - 2⁵ = 1020124211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020124243.

It is not an unprimeable number, because it can be changed into a prime (1020124247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841103 + ... + 1841656.

It is an arithmetic number, because the mean of its divisors is an integer number (255951820).

Almost surely, 2^1020124243 is an apocalyptic number.

1020124243 is a deficient number, since it is larger than the sum of its proper divisors (3683037).

1020124243 is an equidigital number, since it uses as much as digits as its factorization.

1020124243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683036.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1020124243 is about 31939.3838857295. The cubic root of 1020124243 is about 1006.6635790855.

Adding to 1020124243 its reverse (3424210201), we get a palindrome (4444334444).

The spelling of 1020124243 in words is "one billion, twenty million, one hundred twenty-four thousand, two hundred forty-three".