1210000249 has 2 divisors, whose sum is σ = 1210000250. Its totient is φ = 1210000248.

The previous prime is 1210000219. The next prime is 1210000291. The reversal of 1210000249 is 9420000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1181984400 + 28015849 = 34380^2 + 5293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210000249 - 2¹³ = 1209992057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210000219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605000124 + 605000125.

It is an arithmetic number, because the mean of its divisors is an integer number (605000125).

Almost surely, 2^1210000249 is an apocalyptic number.

It is an amenable number.

1210000249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210000249 is an equidigital number, since it uses as much as digits as its factorization.

1210000249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1210000249 is about 34785.0578409753. The cubic root of 1210000249 is about 1065.6023098616.

The spelling of 1210000249 in words is "one billion, two hundred ten million, two hundred forty-nine", and thus it is an aban number.