1200102730 has 16 divisors (see below), whose sum is σ = 2172674664. Its totient is φ = 477265600.

The previous prime is 1200102697. The next prime is 1200102751. The reversal of 1200102730 is 372010021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1071711169 + 128391561 = 32737^2 + 11331^2 .

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 7 ways as a sum of consecutive naturals, for example, 345121 + ... + 348580.

Almost surely, 2^1200102730 is an apocalyptic number.

1200102730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200102730 is a deficient number, since it is larger than the sum of its proper divisors (972571934).

1200102730 is a wasteful number, since it uses less digits than its factorization.

1200102730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693881.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1200102730 is about 34642.4988994732. The cubic root of 1200102730 is about 1062.6888924603.

Adding to 1200102730 its reverse (372010021), we get a palindrome (1572112751).

The spelling of 1200102730 in words is "one billion, two hundred million, one hundred two thousand, seven hundred thirty".