1001236042 has 4 divisors (see below), whose sum is σ = 1501854066. Its totient is φ = 500618020.

The previous prime is 1001236009. The next prime is 1001236051. The reversal of 1001236042 is 2406321001.

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., 908479881 + 92756161 = 30141^2 + 9631^2 .

It is a super-2 number, since 2×1001236042² = 2004947223599651528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250309009 + ... + 250309012.

Almost surely, 2^1001236042 is an apocalyptic number.

1001236042 is a deficient number, since it is larger than the sum of its proper divisors (500618024).

1001236042 is an equidigital number, since it uses as much as digits as its factorization.

1001236042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500618023.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1001236042 is about 31642.3141062723. The cubic root of 1001236042 is about 1000.4118443609.

Adding to 1001236042 its reverse (2406321001), we get a palindrome (3407557043).

The spelling of 1001236042 in words is "one billion, one million, two hundred thirty-six thousand, forty-two".