1298727212 has 12 divisors (see below), whose sum is σ = 2281829256. Its totient is φ = 646776000.

The previous prime is 1298727203. The next prime is 1298727233. The reversal of 1298727212 is 2127278921.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1298727212.

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, 645773 + ... + 647780.

It is an arithmetic number, because the mean of its divisors is an integer number (190152438).

Almost surely, 2^1298727212 is an apocalyptic number.

It is an amenable number.

1298727212 is a deficient number, since it is larger than the sum of its proper divisors (983102044).

1298727212 is a wasteful number, since it uses less digits than its factorization.

1298727212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293808 (or 1293806 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 1298727212 is about 36037.8580384573. The cubic root of 1298727212 is about 1091.0365842518.

The spelling of 1298727212 in words is "one billion, two hundred ninety-eight million, seven hundred twenty-seven thousand, two hundred twelve".