1210120049 has 2 divisors, whose sum is σ = 1210120050. Its totient is φ = 1210120048.

The previous prime is 1210120003. The next prime is 1210120057. The reversal of 1210120049 is 9400210121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 730729024 + 479391025 = 27032^2 + 21895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210120049 - 2⁸ = 1210119793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210120049.

It is not a weakly prime, because it can be changed into another prime (1210120099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605060024 + 605060025.

It is an arithmetic number, because the mean of its divisors is an integer number (605060025).

Almost surely, 2^1210120049 is an apocalyptic number.

It is an amenable number.

1210120049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210120049 is an equidigital number, since it uses as much as digits as its factorization.

1210120049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1210120049 is about 34786.7798021030. The cubic root of 1210120049 is about 1065.6374765056.

The spelling of 1210120049 in words is "one billion, two hundred ten million, one hundred twenty thousand, forty-nine".