200120656 has 10 divisors (see below), whose sum is σ = 387733802. Its totient is φ = 100060320.

The previous prime is 200120587. The next prime is 200120681. The reversal of 200120656 is 656021002.

It can be written as a sum of positive squares in only one way, i.e., 128142400 + 71978256 = 11320^2 + 8484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253755 + ... + 6253786.

Almost surely, 2^200120656 is an apocalyptic number.

It is an amenable number.

200120656 is a deficient number, since it is larger than the sum of its proper divisors (187613146).

200120656 is a wasteful number, since it uses less digits than its factorization.

200120656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507549 (or 12507543 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 200120656 is about 14146.4008143414. The cubic root of 200120656 is about 584.9211240966.

Adding to 200120656 its reverse (656021002), we get a palindrome (856141658).

The spelling of 200120656 in words is "two hundred million, one hundred twenty thousand, six hundred fifty-six".