1400545243 has 2 divisors, whose sum is σ = 1400545244. Its totient is φ = 1400545242.

The previous prime is 1400545241. The next prime is 1400545273. The reversal of 1400545243 is 3425450041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1400545243 - 2¹ = 1400545241 is a prime.

Together with 1400545241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1400545241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700272621 + 700272622.

It is an arithmetic number, because the mean of its divisors is an integer number (700272622).

Almost surely, 2^1400545243 is an apocalyptic number.

1400545243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400545243 is an equidigital number, since it uses as much as digits as its factorization.

1400545243 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 1400545243 is about 37423.8592745323. The cubic root of 1400545243 is about 1118.8341511641.

Adding to 1400545243 its reverse (3425450041), we get a palindrome (4825995284).

The spelling of 1400545243 in words is "one billion, four hundred million, five hundred forty-five thousand, two hundred forty-three".