1043123099 has 4 divisors (see below), whose sum is σ = 1043189064. Its totient is φ = 1043057136.

The previous prime is 1043123087. The next prime is 1043123113. The reversal of 1043123099 is 9903213401.

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.

It is a cyclic number.

It is not a de Polignac number, because 1043123099 - 2¹² = 1043119003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043123299) 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, 6464 + ... + 46130.

It is an arithmetic number, because the mean of its divisors is an integer number (260797266).

Almost surely, 2^1043123099 is an apocalyptic number.

1043123099 is a deficient number, since it is larger than the sum of its proper divisors (65965).

1043123099 is an equidigital number, since it uses as much as digits as its factorization.

1043123099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65964.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1043123099 is about 32297.4162898520. The cubic root of 1043123099 is about 1014.1725560812.

The spelling of 1043123099 in words is "one billion, forty-three million, one hundred twenty-three thousand, ninety-nine".