1042731305 has 32 divisors (see below), whose sum is σ = 1642152960. Its totient is φ = 615798720.

The previous prime is 1042731301. The next prime is 1042731317. The reversal of 1042731305 is 5031372401.

1042731305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1042731305 - 2² = 1042731301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1042731301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63959 + ... + 78588.

It is an arithmetic number, because the mean of its divisors is an integer number (51317280).

Almost surely, 2^1042731305 is an apocalyptic number.

It is an amenable number.

1042731305 is a deficient number, since it is larger than the sum of its proper divisors (599421655).

1042731305 is a wasteful number, since it uses less digits than its factorization.

1042731305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142589.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1042731305 is about 32291.3503124289. The cubic root of 1042731305 is about 1014.0455667608.

The spelling of 1042731305 in words is "one billion, forty-two million, seven hundred thirty-one thousand, three hundred five".