1042142005 has 8 divisors (see below), whose sum is σ = 1251016632. Its totient is φ = 833416128.

The previous prime is 1042141993. The next prime is 1042142027. The reversal of 1042142005 is 5002412401.

It can be written as a sum of positive squares in 4 ways, for example, as 628304356 + 413837649 = 25066^2 + 20343^2 .

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 1042142005 - 2⁹ = 1042141493 is a prime.

It is a Duffinian number.

It is a congruent 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, 21142 + ... + 50311.

It is an arithmetic number, because the mean of its divisors is an integer number (156377079).

Almost surely, 2^1042142005 is an apocalyptic number.

It is an amenable number.

1042142005 is a deficient number, since it is larger than the sum of its proper divisors (208874627).

1042142005 is an equidigital number, since it uses as much as digits as its factorization.

1042142005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74375.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1042142005 is about 32282.2242882984. The cubic root of 1042142005 is about 1013.8545013481.

Adding to 1042142005 its reverse (5002412401), we get a palindrome (6044554406).

The spelling of 1042142005 in words is "one billion, forty-two million, one hundred forty-two thousand, five".