1240200011 has 4 divisors (see below), whose sum is σ = 1240378800. Its totient is φ = 1240021224.

The previous prime is 1240199971. The next prime is 1240200019. The reversal of 1240200011 is 1100020421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1100020421 = 223 ⋅4932827.

It is a cyclic number.

It is not a de Polignac number, because 1240200011 - 2¹⁰ = 1240198987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240199965 and 1240200001.

It is not an unprimeable number, because it can be changed into a prime (1240200019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78551 + ... + 93008.

It is an arithmetic number, because the mean of its divisors is an integer number (310094700).

Almost surely, 2^1240200011 is an apocalyptic number.

1240200011 is a deficient number, since it is larger than the sum of its proper divisors (178789).

1240200011 is an equidigital number, since it uses as much as digits as its factorization.

1240200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178788.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1240200011 is about 35216.4735741670. The cubic root of 1240200011 is about 1074.3948311179.

Adding to 1240200011 its reverse (1100020421), we get a palindrome (2340220432).

The spelling of 1240200011 in words is "one billion, two hundred forty million, two hundred thousand, eleven".