1200610261 has 8 divisors (see below), whose sum is σ = 1278849600. Its totient is φ = 1123217088.

The previous prime is 1200610259. The next prime is 1200610273. The reversal of 1200610261 is 1620160021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200610261 - 2¹ = 1200610259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200610231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208611 + ... + 214288.

It is an arithmetic number, because the mean of its divisors is an integer number (159856200).

Almost surely, 2^1200610261 is an apocalyptic number.

It is an amenable number.

1200610261 is a deficient number, since it is larger than the sum of its proper divisors (78239339).

1200610261 is a wasteful number, since it uses less digits than its factorization.

1200610261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423083.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1200610261 is about 34649.8233906033. The cubic root of 1200610261 is about 1062.8386772883.

Adding to 1200610261 its reverse (1620160021), we get a palindrome (2820770282).

The spelling of 1200610261 in words is "one billion, two hundred million, six hundred ten thousand, two hundred sixty-one".