1001131042 has 4 divisors (see below), whose sum is σ = 1501696566. Its totient is φ = 500565520.

The previous prime is 1001131013. The next prime is 1001131049. The reversal of 1001131042 is 2401311001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 909565281 + 91565761 = 30159^2 + 9569^2 .

It is not an unprimeable number, because it can be changed into a prime (1001131049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250282759 + ... + 250282762.

Almost surely, 2^1001131042 is an apocalyptic number.

1001131042 is a deficient number, since it is larger than the sum of its proper divisors (500565524).

1001131042 is an equidigital number, since it uses as much as digits as its factorization.

1001131042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500565523.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1001131042 is about 31640.6548920846. The cubic root of 1001131042 is about 1000.3768719497.

Adding to 1001131042 its reverse (2401311001), we get a palindrome (3402442043).

The spelling of 1001131042 in words is "one billion, one million, one hundred thirty-one thousand, forty-two".