1282420877197 has 2 divisors, whose sum is σ = 1282420877198. Its totient is φ = 1282420877196.

The previous prime is 1282420877167. The next prime is 1282420877239. The reversal of 1282420877197 is 7917780242821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669040566601 + 613380310596 = 817949^2 + 783186^2 .

It is an emirp because it is prime and its reverse (7917780242821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1282420877197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1282420877117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641210438598 + 641210438599.

It is an arithmetic number, because the mean of its divisors is an integer number (641210438599).

Almost surely, 2^{1282420877197} is an apocalyptic number.

It is an amenable number.

1282420877197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282420877197 is an equidigital number, since it uses as much as digits as its factorization.

1282420877197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6322176, while the sum is 58.

The spelling of 1282420877197 in words is "one trillion, two hundred eighty-two billion, four hundred twenty million, eight hundred seventy-seven thousand, one hundred ninety-seven".