1128240497 has 8 divisors (see below), whose sum is σ = 1144164000. Its totient is φ = 1112372640.

The previous prime is 1128240469. The next prime is 1128240517. The reversal of 1128240497 is 7940428211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128240497 - 2¹⁴ = 1128224113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128240497.

It is not an unprimeable number, because it can be changed into a prime (1128240437) 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 in 7 ways as a sum of consecutive naturals, for example, 27797 + ... + 55037.

It is an arithmetic number, because the mean of its divisors is an integer number (143020500).

Almost surely, 2^1128240497 is an apocalyptic number.

It is an amenable number.

1128240497 is a deficient number, since it is larger than the sum of its proper divisors (15923503).

1128240497 is an equidigital number, since it uses as much as digits as its factorization.

1128240497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27823.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1128240497 is about 33589.2914036602. The cubic root of 1128240497 is about 1041.0395476515.

The spelling of 1128240497 in words is "one billion, one hundred twenty-eight million, two hundred forty thousand, four hundred ninety-seven".