1021305454043 has 16 divisors (see below), whose sum is σ = 1195745396160. Its totient is φ = 854002828800.

The previous prime is 1021305454009. The next prime is 1021305454063. The reversal of 1021305454043 is 3404545031201.

It is a cyclic number.

It is not a de Polignac number, because 1021305454043 - 2²⁸ = 1021037018587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021305454063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5225303 + ... + 5417231.

It is an arithmetic number, because the mean of its divisors is an integer number (74734087260).

Almost surely, 2^{1021305454043} is an apocalyptic number.

1021305454043 is a deficient number, since it is larger than the sum of its proper divisors (174439942117).

1021305454043 is a wasteful number, since it uses less digits than its factorization.

1021305454043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210518.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 1021305454043 in words is "one trillion, twenty-one billion, three hundred five million, four hundred fifty-four thousand, forty-three".