1200745543 has 2 divisors, whose sum is σ = 1200745544. Its totient is φ = 1200745542.

The previous prime is 1200745541. The next prime is 1200745549. The reversal of 1200745543 is 3455470021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200745543 - 2¹ = 1200745541 is a prime.

Together with 1200745541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200745541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600372771 + 600372772.

It is an arithmetic number, because the mean of its divisors is an integer number (600372772).

Almost surely, 2^1200745543 is an apocalyptic number.

1200745543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200745543 is an equidigital number, since it uses as much as digits as its factorization.

1200745543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 1200745543 is about 34651.7754667780. The cubic root of 1200745543 is about 1062.8785951941.

The spelling of 1200745543 in words is "one billion, two hundred million, seven hundred forty-five thousand, five hundred forty-three".