1200340555 has 32 divisors (see below), whose sum is σ = 1502696448. Its totient is φ = 919900800.

The previous prime is 1200340549. The next prime is 1200340613. The reversal of 1200340555 is 5550430021.

It is not a de Polignac number, because 1200340555 - 2¹³ = 1200332363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2464522 + ... + 2465008.

It is an arithmetic number, because the mean of its divisors is an integer number (46959264).

Almost surely, 2^1200340555 is an apocalyptic number.

1200340555 is a deficient number, since it is larger than the sum of its proper divisors (302355893).

1200340555 is a wasteful number, since it uses less digits than its factorization.

1200340555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 1200340555 is about 34645.9312907014. The cubic root of 1200340555 is about 1062.7590856992.

Adding to 1200340555 its reverse (5550430021), we get a palindrome (6750770576).

The spelling of 1200340555 in words is "one billion, two hundred million, three hundred forty thousand, five hundred fifty-five".