1021243012404 has 48 divisors (see below), whose sum is σ = 2433912096000. Its totient is φ = 333128802816.

The previous prime is 1021243012379. The next prime is 1021243012423. The reversal of 1021243012404 is 4042103421201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4450272 + ... + 4674120.

It is an arithmetic number, because the mean of its divisors is an integer number (50706502000).

Almost surely, 2^{1021243012404} is an apocalyptic number.

It is an amenable number.

1021243012404 is an abundant number, since it is smaller than the sum of its proper divisors (1412669083596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021243012404 is a wasteful number, since it uses less digits than its factorization.

1021243012404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231992 (or 231990 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1021243012404 its reverse (4042103421201), we get a palindrome (5063346433605).

The spelling of 1021243012404 in words is "one trillion, twenty-one billion, two hundred forty-three million, twelve thousand, four hundred four".