1001440012 has 24 divisors (see below), whose sum is σ = 1861979616. Its totient is φ = 469648128.

The previous prime is 1001439983. The next prime is 1001440021. The reversal of 1001440012 is 2100441001.

It is a junction number, because it is equal to n+sod(n) for n = 1001439974 and 1001440001.

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, 5208 + ... + 45055.

It is an arithmetic number, because the mean of its divisors is an integer number (77582484).

Almost surely, 2^1001440012 is an apocalyptic number.

It is an amenable number.

1001440012 is a deficient number, since it is larger than the sum of its proper divisors (860539604).

1001440012 is a wasteful number, since it uses less digits than its factorization.

1001440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50577 (or 50575 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1001440012 is about 31645.5369997098. The cubic root of 1001440012 is about 1000.4797737803.

Adding to 1001440012 its reverse (2100441001), we get a palindrome (3101881013).

The spelling of 1001440012 in words is "one billion, one million, four hundred forty thousand, twelve".