1128442339 has 4 divisors (see below), whose sum is σ = 1128764560. Its totient is φ = 1128120120.

The previous prime is 1128442331. The next prime is 1128442351. The reversal of 1128442339 is 9332448211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1128442339 - 2³ = 1128442331 is a prime.

It is a super-2 number, since 2×1128442339² = 2546764224895581842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1128442298 and 1128442307.

It is not an unprimeable number, because it can be changed into a prime (1128442331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155799 + ... + 162880.

It is an arithmetic number, because the mean of its divisors is an integer number (282191140).

Almost surely, 2^1128442339 is an apocalyptic number.

1128442339 is a deficient number, since it is larger than the sum of its proper divisors (322221).

1128442339 is an equidigital number, since it uses as much as digits as its factorization.

1128442339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322220.

The product of its digits is 41472, while the sum is 37.

The square root of 1128442339 is about 33592.2958280615. The cubic root of 1128442339 is about 1041.1016245390.

The spelling of 1128442339 in words is "one billion, one hundred twenty-eight million, four hundred forty-two thousand, three hundred thirty-nine".