1212942298 has 4 divisors (see below), whose sum is σ = 1819413450. Its totient is φ = 606471148.

The previous prime is 1212942187. The next prime is 1212942331. The reversal of 1212942298 is 8922492121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8922492121 = 281 ⋅31752641.

It can be written as a sum of positive squares in only one way, i.e., 1178754889 + 34187409 = 34333^2 + 5847^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212942298.

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 as a sum of consecutive naturals, namely, 303235573 + ... + 303235576.

Almost surely, 2^1212942298 is an apocalyptic number.

1212942298 is a deficient number, since it is larger than the sum of its proper divisors (606471152).

1212942298 is an equidigital number, since it uses as much as digits as its factorization.

1212942298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606471151.

The product of its digits is 41472, while the sum is 40.

The square root of 1212942298 is about 34827.3211430337. The cubic root of 1212942298 is about 1066.4652619521.

The spelling of 1212942298 in words is "one billion, two hundred twelve million, nine hundred forty-two thousand, two hundred ninety-eight".