1200132520 has 32 divisors (see below), whose sum is σ = 2793414600. Its totient is φ = 463499008.

The previous prime is 1200132509. The next prime is 1200132553. The reversal of 1200132520 is 252310021.

It can be written as a sum of positive squares in 4 ways, for example, as 583802244 + 616330276 = 24162^2 + 24826^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200132494 and 1200132503.

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, 516139 + ... + 518458.

Almost surely, 2^1200132520 is an apocalyptic number.

1200132520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200132520 is an abundant number, since it is smaller than the sum of its proper divisors (1593282080).

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

1200132520 is a wasteful number, since it uses less digits than its factorization.

1200132520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034637 (or 1034633 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1200132520 is about 34642.9288600141. The cubic root of 1200132520 is about 1062.6976853854.

Adding to 1200132520 its reverse (252310021), we get a palindrome (1452442541).

It can be divided in two parts, 12001 and 32520, that added together give a square (44521 = 211²).

The spelling of 1200132520 in words is "one billion, two hundred million, one hundred thirty-two thousand, five hundred twenty".