1405252243 has 2 divisors, whose sum is σ = 1405252244. Its totient is φ = 1405252242.

The previous prime is 1405252241. The next prime is 1405252253. The reversal of 1405252243 is 3422525041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1405252243 - 2¹ = 1405252241 is a prime.

Together with 1405252241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1405252241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702626121 + 702626122.

It is an arithmetic number, because the mean of its divisors is an integer number (702626122).

Almost surely, 2^1405252243 is an apocalyptic number.

1405252243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405252243 is an equidigital number, since it uses as much as digits as its factorization.

1405252243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1405252243 is about 37486.6942127470. The cubic root of 1405252243 is about 1120.0861548839.

Adding to 1405252243 its reverse (3422525041), we get a palindrome (4827777284).

The spelling of 1405252243 in words is "one billion, four hundred five million, two hundred fifty-two thousand, two hundred forty-three".