1128240727 has 2 divisors, whose sum is σ = 1128240728. Its totient is φ = 1128240726.

The previous prime is 1128240721. The next prime is 1128240787. The reversal of 1128240727 is 7270428211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128240727 - 2³ = 1128240719 is a prime.

It is a super-2 number, since 2×1128240727² = 2545854276122977058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1128240692 and 1128240701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128240721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564120363 + 564120364.

It is an arithmetic number, because the mean of its divisors is an integer number (564120364).

Almost surely, 2^1128240727 is an apocalyptic number.

1128240727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128240727 is an equidigital number, since it uses as much as digits as its factorization.

1128240727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 1128240727 is about 33589.2948273702. The cubic root of 1128240727 is about 1041.0396183926.

Adding to 1128240727 its reverse (7270428211), we get a palindrome (8398668938).

The spelling of 1128240727 in words is "one billion, one hundred twenty-eight million, two hundred forty thousand, seven hundred twenty-seven".