1247040293 has 2 divisors, whose sum is σ = 1247040294. Its totient is φ = 1247040292.

The previous prime is 1247040283. The next prime is 1247040313. The reversal of 1247040293 is 3920407421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1245878209 + 1162084 = 35297^2 + 1078^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247040293 - 2⁶ = 1247040229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247040283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623520146 + 623520147.

It is an arithmetic number, because the mean of its divisors is an integer number (623520147).

Almost surely, 2^1247040293 is an apocalyptic number.

It is an amenable number.

1247040293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247040293 is an equidigital number, since it uses as much as digits as its factorization.

1247040293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1247040293 is about 35313.4576755095. The cubic root of 1247040293 is about 1076.3664737165.

The spelling of 1247040293 in words is "one billion, two hundred forty-seven million, forty thousand, two hundred ninety-three".