1200140423 has 2 divisors, whose sum is σ = 1200140424. Its totient is φ = 1200140422.

The previous prime is 1200140419. The next prime is 1200140503. The reversal of 1200140423 is 3240410021.

It is a weak prime.

It is an emirp because it is prime and its reverse (3240410021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200140423 - 2² = 1200140419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200140923) 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, 600070211 + 600070212.

It is an arithmetic number, because the mean of its divisors is an integer number (600070212).

Almost surely, 2^1200140423 is an apocalyptic number.

1200140423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200140423 is an equidigital number, since it uses as much as digits as its factorization.

1200140423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1200140423 is about 34643.0429235077. The cubic root of 1200140423 is about 1062.7000180393.

Adding to 1200140423 its reverse (3240410021), we get a palindrome (4440550444).

The spelling of 1200140423 in words is "one billion, two hundred million, one hundred forty thousand, four hundred twenty-three".