1020004120205 has 32 divisors (see below), whose sum is σ = 1481390228736. Its totient is φ = 658181090304.

The previous prime is 1020004120199. The next prime is 1020004120217. The reversal of 1020004120205 is 5020214000201.

It is a cyclic number.

It is not a de Polignac number, because 1020004120205 - 2⁸ = 1020004119949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3598262 + ... + 3871368.

It is an arithmetic number, because the mean of its divisors is an integer number (46293444648).

Almost surely, 2^{1020004120205} is an apocalyptic number.

It is an amenable number.

1020004120205 is a deficient number, since it is larger than the sum of its proper divisors (461386108531).

1020004120205 is a wasteful number, since it uses less digits than its factorization.

1020004120205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279413.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 1020004120205 its reverse (5020214000201), we get a palindrome (6040218120406).

The spelling of 1020004120205 in words is "one trillion, twenty billion, four million, one hundred twenty thousand, two hundred five".