1020040223 has 4 divisors (see below), whose sum is σ = 1020108768. Its totient is φ = 1019971680.

The previous prime is 1020040207. The next prime is 1020040237. The reversal of 1020040223 is 3220400201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3220400201 = 5471 ⋅588631.

It is a cyclic number.

It is not a de Polignac number, because 1020040223 - 2⁴ = 1020040207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020040198 and 1020040207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020040123) 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, 1511 + ... + 45192.

It is an arithmetic number, because the mean of its divisors is an integer number (255027192).

Almost surely, 2^1020040223 is an apocalyptic number.

1020040223 is a deficient number, since it is larger than the sum of its proper divisors (68545).

1020040223 is an equidigital number, since it uses as much as digits as its factorization.

1020040223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68544.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1020040223 is about 31938.0685546262. The cubic root of 1020040223 is about 1006.6359412114.

Adding to 1020040223 its reverse (3220400201), we get a palindrome (4240440424).

The spelling of 1020040223 in words is "one billion, twenty million, forty thousand, two hundred twenty-three".