1004205120 has 56 divisors (see below), whose sum is σ = 3188354304. Its totient is φ = 267787776.

The previous prime is 1004205109. The next prime is 1004205133. The reversal of 1004205120 is 215024001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1004205120.

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, 522064 + ... + 523983.

Almost surely, 2^1004205120 is an apocalyptic number.

1004205120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004205120 is an abundant number, since it is smaller than the sum of its proper divisors (2184149184).

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

1004205120 is a wasteful number, since it uses less digits than its factorization.

1004205120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046067 (or 1046057 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1004205120 is about 31689.1956351057. The cubic root of 1004205120 is about 1001.3997464623.

Adding to 1004205120 its reverse (215024001), we get a palindrome (1219229121).

The spelling of 1004205120 in words is "one billion, four million, two hundred five thousand, one hundred twenty".