1240100111 has 2 divisors, whose sum is σ = 1240100112. Its totient is φ = 1240100110.

The previous prime is 1240100107. The next prime is 1240100137. The reversal of 1240100111 is 1110010421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240100111 - 2² = 1240100107 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240100092 and 1240100101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240100611) 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, 620050055 + 620050056.

It is an arithmetic number, because the mean of its divisors is an integer number (620050056).

Almost surely, 2^1240100111 is an apocalyptic number.

1240100111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240100111 is an equidigital number, since it uses as much as digits as its factorization.

1240100111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1240100111 is about 35215.0551753082. The cubic root of 1240100111 is about 1074.3659822966.

Adding to 1240100111 its reverse (1110010421), we get a palindrome (2350110532).

The spelling of 1240100111 in words is "one billion, two hundred forty million, one hundred thousand, one hundred eleven".