1020412045 has 4 divisors (see below), whose sum is σ = 1224494460. Its totient is φ = 816329632.

The previous prime is 1020412033. The next prime is 1020412049. The reversal of 1020412045 is 5402140201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 393109929 + 627302116 = 19827^2 + 25046^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020412045 - 2⁵ = 1020412013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020412049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102041200 + ... + 102041209.

It is an arithmetic number, because the mean of its divisors is an integer number (306123615).

Almost surely, 2^1020412045 is an apocalyptic number.

It is an amenable number.

1020412045 is a deficient number, since it is larger than the sum of its proper divisors (204082415).

1020412045 is an equidigital number, since it uses as much as digits as its factorization.

1020412045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204082414.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1020412045 is about 31943.8890086977. The cubic root of 1020412045 is about 1006.7582383233.

Adding to 1020412045 its reverse (5402140201), we get a palindrome (6422552246).

The spelling of 1020412045 in words is "one billion, twenty million, four hundred twelve thousand, forty-five".