1040042105 has 8 divisors (see below), whose sum is σ = 1248520392. Its totient is φ = 831720448.

The previous prime is 1040042077. The next prime is 1040042119. The reversal of 1040042105 is 5012400401.

It can be written as a sum of positive squares in 4 ways, for example, as 540609001 + 499433104 = 23251^2 + 22348^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1040042105 - 2²² = 1035847801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24014 + ... + 51543.

It is an arithmetic number, because the mean of its divisors is an integer number (156065049).

Almost surely, 2^1040042105 is an apocalyptic number.

It is an amenable number.

1040042105 is a deficient number, since it is larger than the sum of its proper divisors (208478287).

1040042105 is an equidigital number, since it uses as much as digits as its factorization.

1040042105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78315.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1040042105 is about 32249.6837968995. The cubic root of 1040042105 is about 1013.1730764167.

Adding to 1040042105 its reverse (5012400401), we get a palindrome (6052442506).

The spelling of 1040042105 in words is "one billion, forty million, forty-two thousand, one hundred five".