1128942144 has 112 divisors (see below), whose sum is σ = 3620658240. Its totient is φ = 342097920.

The previous prime is 1128942107. The next prime is 1128942223. The reversal of 1128942144 is 4412498211.

1128942144 is a `hidden beast` number, since 112 + 89 + 421 + 44 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1128942099 and 1128942108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10689 + ... + 48704.

Almost surely, 2^1128942144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128942144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1810329120).

1128942144 is an abundant number, since it is smaller than the sum of its proper divisors (2491716096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1128942144 is a wasteful number, since it uses less digits than its factorization.

1128942144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59425 (or 59409 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1128942144 is about 33599.7342846636. The cubic root of 1128942144 is about 1041.2553086558.

The spelling of 1128942144 in words is "one billion, one hundred twenty-eight million, nine hundred forty-two thousand, one hundred forty-four".