1043123420 has 12 divisors (see below), whose sum is σ = 2190559224. Its totient is φ = 417249360.

The previous prime is 1043123407. The next prime is 1043123437. The reversal of 1043123420 is 243213401.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 52156171 = 1043123420 / (1 + 0 + 4 + 3 + 1 + 2 + 3 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1043123392 and 1043123401.

It is a congruent number.

It is an unprimeable number.

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, 26078066 + ... + 26078105.

It is an arithmetic number, because the mean of its divisors is an integer number (182546602).

Almost surely, 2^1043123420 is an apocalyptic number.

1043123420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043123420 is an abundant number, since it is smaller than the sum of its proper divisors (1147435804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1043123420 is a wasteful number, since it uses less digits than its factorization.

1043123420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52156180 (or 52156178 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1043123420 is about 32297.4212592894. The cubic root of 1043123420 is about 1014.1726601116.

Adding to 1043123420 its reverse (243213401), we get a palindrome (1286336821).

The spelling of 1043123420 in words is "one billion, forty-three million, one hundred twenty-three thousand, four hundred twenty".