1020204040404 has 24 divisors (see below), whose sum is σ = 2380495043808. Its totient is φ = 340065306400.

The previous prime is 1020204040381. The next prime is 1020204040423. The reversal of 1020204040404 is 4040404020201.

It is a congruent number.

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, 1744954 + ... + 2255054.

It is an arithmetic number, because the mean of its divisors is an integer number (99187293492).

Almost surely, 2^{1020204040404} is an apocalyptic number.

It is an amenable number.

1020204040404 is an abundant number, since it is smaller than the sum of its proper divisors (1360291003404).

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

1020204040404 is a wasteful number, since it uses less digits than its factorization.

1020204040404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676775 (or 676773 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 1020204040404 its reverse (4040404020201), we get a palindrome (5060608060605).

The spelling of 1020204040404 in words is "one trillion, twenty billion, two hundred four million, forty thousand, four hundred four".