1052123405 has 8 divisors (see below), whose sum is σ = 1286370072. Its totient is φ = 825817408.

The previous prime is 1052123399. The next prime is 1052123407. The reversal of 1052123405 is 5043212501.

1052123405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 246301636 + 805821769 = 15694^2 + 28387^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052123405 is a prime.

It is a super-2 number, since 2×1052123405² = 2213927318697588050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052123407) 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, 1984874 + ... + 1985403.

It is an arithmetic number, because the mean of its divisors is an integer number (160796259).

Almost surely, 2^1052123405 is an apocalyptic number.

It is an amenable number.

1052123405 is a deficient number, since it is larger than the sum of its proper divisors (234246667).

1052123405 is an equidigital number, since it uses as much as digits as its factorization.

1052123405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970335.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1052123405 is about 32436.4517942391. The cubic root of 1052123405 is about 1017.0810450334.

Adding to 1052123405 its reverse (5043212501), we get a palindrome (6095335906).

The spelling of 1052123405 in words is "one billion, fifty-two million, one hundred twenty-three thousand, four hundred five".