1200542011 has 2 divisors, whose sum is σ = 1200542012. Its totient is φ = 1200542010.

The previous prime is 1200541949. The next prime is 1200542039. The reversal of 1200542011 is 1102450021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200542011 - 2¹⁹ = 1200017723 is a prime.

It is a super-2 number, since 2×1200542011² = 2882602240351848242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200542111) 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, 600271005 + 600271006.

It is an arithmetic number, because the mean of its divisors is an integer number (600271006).

Almost surely, 2^1200542011 is an apocalyptic number.

1200542011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200542011 is an equidigital number, since it uses as much as digits as its factorization.

1200542011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1200542011 is about 34648.8385231020. The cubic root of 1200542011 is about 1062.8185374987.

Adding to 1200542011 its reverse (1102450021), we get a palindrome (2302992032).

The spelling of 1200542011 in words is "one billion, two hundred million, five hundred forty-two thousand, eleven".