1202020520 has 16 divisors (see below), whose sum is σ = 2704546260. Its totient is φ = 480808192.

The previous prime is 1202020481. The next prime is 1202020529. The reversal of 1202020520 is 250202021.

It can be written as a sum of positive squares in 2 ways, for example, as 1119973156 + 82047364 = 33466^2 + 9058^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1202020495 and 1202020504.

It is not an unprimeable number, because it can be changed into a prime (1202020529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15025217 + ... + 15025296.

Almost surely, 2^1202020520 is an apocalyptic number.

1202020520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202020520 is an abundant number, since it is smaller than the sum of its proper divisors (1502525740).

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

1202020520 is a wasteful number, since it uses less digits than its factorization.

1202020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30050524 (or 30050520 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1202020520 is about 34670.1675796354. The cubic root of 1202020520 is about 1063.2546577753.

Adding to 1202020520 its reverse (250202021), we get a palindrome (1452222541).

The spelling of 1202020520 in words is "one billion, two hundred two million, twenty thousand, five hundred twenty".