1045205023 has 4 divisors (see below), whose sum is σ = 1045383040. Its totient is φ = 1045027008.

The previous prime is 1045205009. The next prime is 1045205027. The reversal of 1045205023 is 3205025401.

1045205023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1045205023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1045204985 and 1045205003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045205027) 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, 79890 + ... + 92047.

It is an arithmetic number, because the mean of its divisors is an integer number (261345760).

Almost surely, 2^1045205023 is an apocalyptic number.

1045205023 is a deficient number, since it is larger than the sum of its proper divisors (178017).

1045205023 is an equidigital number, since it uses as much as digits as its factorization.

1045205023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178016.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1045205023 is about 32329.6307278633. The cubic root of 1045205023 is about 1014.8468219911.

The spelling of 1045205023 in words is "one billion, forty-five million, two hundred five thousand, twenty-three".