1101240289 has 2 divisors, whose sum is σ = 1101240290. Its totient is φ = 1101240288.

The previous prime is 1101240281. The next prime is 1101240313. The reversal of 1101240289 is 9820421011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754051600 + 347188689 = 27460^2 + 18633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101240289 - 2³ = 1101240281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101240281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550620144 + 550620145.

It is an arithmetic number, because the mean of its divisors is an integer number (550620145).

Almost surely, 2^1101240289 is an apocalyptic number.

It is an amenable number.

1101240289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101240289 is an equidigital number, since it uses as much as digits as its factorization.

1101240289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1101240289 is about 33184.9406960446. The cubic root of 1101240289 is about 1032.6679472046.

The spelling of 1101240289 in words is "one billion, one hundred one million, two hundred forty thousand, two hundred eighty-nine".