1128942145 has 16 divisors (see below), whose sum is σ = 1371359808. Its totient is φ = 892110400.

The previous prime is 1128942107. The next prime is 1128942223. The reversal of 1128942145 is 5412498211.

It is a de Polignac number, because none of the positive numbers 2^k-1128942145 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233442 + ... + 238228.

It is an arithmetic number, because the mean of its divisors is an integer number (85709988).

Almost surely, 2^1128942145 is an apocalyptic number.

It is an amenable number.

1128942145 is a deficient number, since it is larger than the sum of its proper divisors (242417663).

1128942145 is a wasteful number, since it uses less digits than its factorization.

1128942145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360.

The product of its digits is 23040, while the sum is 37.

The square root of 1128942145 is about 33599.7342995447. The cubic root of 1128942145 is about 1041.2553089633.

The spelling of 1128942145 in words is "one billion, one hundred twenty-eight million, nine hundred forty-two thousand, one hundred forty-five".