1261046200 has 24 divisors (see below), whose sum is σ = 2931932880. Its totient is φ = 504418400.

The previous prime is 1261046177. The next prime is 1261046239. The reversal of 1261046200 is 26401621.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3152416 + ... + 3152815.

It is an arithmetic number, because the mean of its divisors is an integer number (122163870).

Almost surely, 2^1261046200 is an apocalyptic number.

1261046200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261046200 is an abundant number, since it is smaller than the sum of its proper divisors (1670886680).

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

1261046200 is a wasteful number, since it uses less digits than its factorization.

1261046200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305247 (or 6305238 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1261046200 is about 35511.2123138594. The cubic root of 1261046200 is about 1080.3811526195.

Adding to 1261046200 its reverse (26401621), we get a palindrome (1287447821).

The spelling of 1261046200 in words is "one billion, two hundred sixty-one million, forty-six thousand, two hundred".