1023440240012 has 24 divisors (see below), whose sum is σ = 1796764032000. Its totient is φ = 510080287376.

The previous prime is 1023440239937. The next prime is 1023440240063. The reversal of 1023440240012 is 2100420443201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023440240012.

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, 3296423 + ... + 3593505.

It is an arithmetic number, because the mean of its divisors is an integer number (74865168000).

Almost surely, 2^{1023440240012} is an apocalyptic number.

It is an amenable number.

1023440240012 is a deficient number, since it is larger than the sum of its proper divisors (773323791988).

1023440240012 is a wasteful number, since it uses less digits than its factorization.

1023440240012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299845 (or 299843 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1023440240012 its reverse (2100420443201), we get a palindrome (3123860683213).

The spelling of 1023440240012 in words is "one trillion, twenty-three billion, four hundred forty million, two hundred forty thousand, twelve".