1004253123220 has 48 divisors (see below), whose sum is σ = 2117258922240. Its totient is φ = 400115534336.

The previous prime is 1004253123197. The next prime is 1004253123221. The reversal of 1004253123220 is 223213524001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004253123221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64495596 + ... + 64511164.

It is an arithmetic number, because the mean of its divisors is an integer number (44109560880).

Almost surely, 2^{1004253123220} is an apocalyptic number.

1004253123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004253123220 is an abundant number, since it is smaller than the sum of its proper divisors (1113005799020).

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

1004253123220 is a wasteful number, since it uses less digits than its factorization.

1004253123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28104 (or 28102 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 1004253123220 its reverse (223213524001), we get a palindrome (1227466647221).

The spelling of 1004253123220 in words is "one trillion, four billion, two hundred fifty-three million, one hundred twenty-three thousand, two hundred twenty".