1001440042 has 8 divisors (see below), whose sum is σ = 1504336032. Its totient is φ = 499994700.

The previous prime is 1001440021. The next prime is 1001440067. The reversal of 1001440042 is 2400441001.

1001440042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001439998 and 1001440025.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360934 + ... + 363697.

It is an arithmetic number, because the mean of its divisors is an integer number (188042004).

Almost surely, 2^1001440042 is an apocalyptic number.

1001440042 is a deficient number, since it is larger than the sum of its proper divisors (502895990).

1001440042 is an equidigital number, since it uses as much as digits as its factorization.

1001440042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725324.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1001440042 is about 31645.5374737103. The cubic root of 1001440042 is about 1000.4797837707.

Adding to 1001440042 its reverse (2400441001), we get a palindrome (3401881043).

The spelling of 1001440042 in words is "one billion, one million, four hundred forty thousand, forty-two".