1210012730 has 8 divisors (see below), whose sum is σ = 2178022932. Its totient is φ = 484005088.

The previous prime is 1210012721. The next prime is 1210012763. The reversal of 1210012730 is 372100121.

It can be written as a sum of positive squares in 2 ways, for example, as 981005041 + 229007689 = 31321^2 + 15133^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1210012699 and 1210012708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60500627 + ... + 60500646.

Almost surely, 2^1210012730 is an apocalyptic number.

1210012730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210012730 is a deficient number, since it is larger than the sum of its proper divisors (968010202).

1210012730 is a wasteful number, since it uses less digits than its factorization.

1210012730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121001280.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1210012730 is about 34785.2372422555. The cubic root of 1210012730 is about 1065.6059737002.

Adding to 1210012730 its reverse (372100121), we get a palindrome (1582112851).

The spelling of 1210012730 in words is "one billion, two hundred ten million, twelve thousand, seven hundred thirty".