1023520043 has 8 divisors (see below), whose sum is σ = 1259717088. Its totient is φ = 809817984.

The previous prime is 1023520021. The next prime is 1023520049. The reversal of 1023520043 is 3400253201.

It is a happy number.

1023520043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1023520043 - 2⁶ = 1023519979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023519997 and 1023520024.

It is not an unprimeable number, because it can be changed into a prime (1023520049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5623646 + ... + 5623827.

It is an arithmetic number, because the mean of its divisors is an integer number (157464636).

Almost surely, 2^1023520043 is an apocalyptic number.

1023520043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1023520043 is a deficient number, since it is larger than the sum of its proper divisors (236197045).

1023520043 is a wasteful number, since it uses less digits than its factorization.

1023520043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247493.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1023520043 is about 31992.4997929202. The cubic root of 1023520043 is about 1007.7793392833.

Adding to 1023520043 its reverse (3400253201), we get a palindrome (4423773244).

The spelling of 1023520043 in words is "one billion, twenty-three million, five hundred twenty thousand, forty-three".