1228533842 has 16 divisors (see below), whose sum is σ = 1872484992. Its totient is φ = 604393680.

The previous prime is 1228533833. The next prime is 1228533919. The reversal of 1228533842 is 2483358221.

It is a junction number, because it is equal to n+sod(n) for n = 1228533796 and 1228533805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121223 + ... + 130965.

It is an arithmetic number, because the mean of its divisors is an integer number (117030312).

Almost surely, 2^1228533842 is an apocalyptic number.

1228533842 is a deficient number, since it is larger than the sum of its proper divisors (643951150).

1228533842 is an equidigital number, since it uses as much as digits as its factorization.

1228533842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10753.

The product of its digits is 92160, while the sum is 38.

The square root of 1228533842 is about 35050.4471012853. The cubic root of 1228533842 is about 1071.0153816762.

The spelling of 1228533842 in words is "one billion, two hundred twenty-eight million, five hundred thirty-three thousand, eight hundred forty-two".