1020453543 has 48 divisors (see below), whose sum is σ = 1596381696. Its totient is φ = 625824000.

The previous prime is 1020453529. The next prime is 1020453587. The reversal of 1020453543 is 3453540201.

It is not a de Polignac number, because 1020453543 - 2¹² = 1020449447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020453523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1358418 + ... + 1359168.

It is an arithmetic number, because the mean of its divisors is an integer number (33257952).

Almost surely, 2^1020453543 is an apocalyptic number.

1020453543 is a deficient number, since it is larger than the sum of its proper divisors (575928153).

1020453543 is a wasteful number, since it uses less digits than its factorization.

1020453543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1020453543 is about 31944.5385473010. The cubic root of 1020453543 is about 1006.7718857145.

Adding to 1020453543 its reverse (3453540201), we get a palindrome (4473993744).

The spelling of 1020453543 in words is "one billion, twenty million, four hundred fifty-three thousand, five hundred forty-three".