1013042005 has 8 divisors (see below), whose sum is σ = 1216198872. Its totient is φ = 810067968.

The previous prime is 1013042003. The next prime is 1013042011. The reversal of 1013042005 is 5002403101.

It can be written as a sum of positive squares in 4 ways, for example, as 528954001 + 484088004 = 22999^2 + 22002^2 .

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 1013042005 - 2¹ = 1013042003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013042005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013042003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33204 + ... + 55933.

It is an arithmetic number, because the mean of its divisors is an integer number (152024859).

Almost surely, 2^1013042005 is an apocalyptic number.

It is an amenable number.

1013042005 is a deficient number, since it is larger than the sum of its proper divisors (203156867).

1013042005 is an equidigital number, since it uses as much as digits as its factorization.

1013042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91415.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1013042005 is about 31828.3208008214. The cubic root of 1013042005 is about 1004.3285714352.

Adding to 1013042005 its reverse (5002403101), we get a palindrome (6015445106).

The spelling of 1013042005 in words is "one billion, thirteen million, forty-two thousand, five".