1210542354257 has 2 divisors, whose sum is σ = 1210542354258. Its totient is φ = 1210542354256.

The previous prime is 1210542354169. The next prime is 1210542354283. The reversal of 1210542354257 is 7524532450121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950851213456 + 259691140801 = 975116^2 + 509599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210542354257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210542354457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605271177128 + 605271177129.

It is an arithmetic number, because the mean of its divisors is an integer number (605271177129).

Almost surely, 2^{1210542354257} is an apocalyptic number.

It is an amenable number.

1210542354257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210542354257 is an equidigital number, since it uses as much as digits as its factorization.

1210542354257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 1210542354257 in words is "one trillion, two hundred ten billion, five hundred forty-two million, three hundred fifty-four thousand, two hundred fifty-seven".