1145421293 has 2 divisors, whose sum is σ = 1145421294. Its totient is φ = 1145421292.

The previous prime is 1145421239. The next prime is 1145421301. The reversal of 1145421293 is 3921245411.

Together with previous prime (1145421239) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1134544489 + 10876804 = 33683^2 + 3298^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145421293 - 2¹² = 1145417197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145421793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572710646 + 572710647.

It is an arithmetic number, because the mean of its divisors is an integer number (572710647).

Almost surely, 2^1145421293 is an apocalyptic number.

It is an amenable number.

1145421293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145421293 is an equidigital number, since it uses as much as digits as its factorization.

1145421293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 1145421293 is about 33844.0732329901. The cubic root of 1145421293 is about 1046.2972505373.

The spelling of 1145421293 in words is "one billion, one hundred forty-five million, four hundred twenty-one thousand, two hundred ninety-three".