1384140 has 96 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 326656.

The previous prime is 1384139. The next prime is 1384171. The reversal of 1384140 is 414831.

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 31 ways as a sum of consecutive naturals, for example, 23431 + ... + 23489.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2^1384140 is an apocalyptic number.

1384140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1384140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177280).

1384140 is an abundant number, since it is smaller than the sum of its proper divisors (2970420).

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

1384140 is a wasteful number, since it uses less digits than its factorization.

1384140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1384140 is about 1176.4947938686. The cubic root of 1384140 is about 111.4448506318. Note that the first 3 decimals are identical.

Adding to 1384140 its reverse (414831), we get a palindrome (1798971).

It can be divided in two parts, 138 and 4140, that added together give a triangular number (4278 = T₉₂).

The spelling of 1384140 in words is "one million, three hundred eighty-four thousand, one hundred forty".