1200020052 has 48 divisors (see below), whose sum is σ = 3490970112. Its totient is φ = 311693280.

The previous prime is 1200020051. The next prime is 1200020071. The reversal of 1200020052 is 2500200021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200020051) 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, 648438 + ... + 650285.

It is an arithmetic number, because the mean of its divisors is an integer number (72728544).

Almost surely, 2^1200020052 is an apocalyptic number.

1200020052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200020052 is an abundant number, since it is smaller than the sum of its proper divisors (2290950060).

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

1200020052 is a wasteful number, since it uses less digits than its factorization.

1200020052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298748 (or 1298746 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1200020052 is about 34641.3055758584. The cubic root of 1200020052 is about 1062.6644881579.

Adding to 1200020052 its reverse (2500200021), we get a palindrome (3700220073).

The spelling of 1200020052 in words is "one billion, two hundred million, twenty thousand, fifty-two".