1043123421 has 8 divisors (see below), whose sum is σ = 1393330464. Its totient is φ = 694166000.

The previous prime is 1043123407. The next prime is 1043123437. The reversal of 1043123421 is 1243213401.

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 1043123421 - 2⁶ = 1043123357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043123441) 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, 310455 + ... + 313796.

It is an arithmetic number, because the mean of its divisors is an integer number (174166308).

Almost surely, 2^1043123421 is an apocalyptic number.

It is an amenable number.

1043123421 is a deficient number, since it is larger than the sum of its proper divisors (350207043).

1043123421 is an equidigital number, since it uses as much as digits as its factorization.

1043123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624811.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1043123421 is about 32297.4212747705. The cubic root of 1043123421 is about 1014.1726604357.

Adding to 1043123421 its reverse (1243213401), we get a palindrome (2286336822).

The spelling of 1043123421 in words is "one billion, forty-three million, one hundred twenty-three thousand, four hundred twenty-one".