1020450045 has 32 divisors (see below), whose sum is σ = 1649793024. Its totient is φ = 538574400.

The previous prime is 1020450023. The next prime is 1020450049. The reversal of 1020450045 is 5400540201.

It is not a de Polignac number, because 1020450045 - 2⁶ = 1020449981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020450049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1239504 + ... + 1240326.

It is an arithmetic number, because the mean of its divisors is an integer number (51556032).

Almost surely, 2^1020450045 is an apocalyptic number.

1020450045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020450045 is a deficient number, since it is larger than the sum of its proper divisors (629342979).

1020450045 is a wasteful number, since it uses less digits than its factorization.

1020450045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1020450045 is about 31944.4837961110. The cubic root of 1020450045 is about 1006.7707353463.

Adding to 1020450045 its reverse (5400540201), we get a palindrome (6420990246).

The spelling of 1020450045 in words is "one billion, twenty million, four hundred fifty thousand, forty-five".