1247204130373 has 2 divisors, whose sum is σ = 1247204130374. Its totient is φ = 1247204130372.

The previous prime is 1247204130349. The next prime is 1247204130377. The reversal of 1247204130373 is 3730314027421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1044939861729 + 202264268644 = 1022223^2 + 449738^2 .

It is an emirp because it is prime and its reverse (3730314027421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1247204130373 - 2³⁷ = 1109765176901 is a prime.

It is a super-2 number, since 2×1247204130373² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247204130377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623602065186 + 623602065187.

It is an arithmetic number, because the mean of its divisors is an integer number (623602065187).

Almost surely, 2^{1247204130373} is an apocalyptic number.

It is an amenable number.

1247204130373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247204130373 is an equidigital number, since it uses as much as digits as its factorization.

1247204130373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 37.

Adding to 1247204130373 its reverse (3730314027421), we get a palindrome (4977518157794).

The spelling of 1247204130373 in words is "one trillion, two hundred forty-seven billion, two hundred four million, one hundred thirty thousand, three hundred seventy-three".