1138140 has 36 divisors (see below), whose sum is σ = 3452904. Its totient is φ = 303456.

The previous prime is 1138127. The next prime is 1138141. The reversal of 1138140 is 418311.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2982 + ... + 3341.

It is an arithmetic number, because the mean of its divisors is an integer number (95914).

2^1138140 is an apocalyptic number.

1138140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138140 is an abundant number, since it is smaller than the sum of its proper divisors (2314764).

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

1138140 is a wasteful number, since it uses less digits than its factorization.

1138140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6338 (or 6333 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1138140 is about 1066.8364448218. The cubic root of 1138140 is about 104.4075477874.

The spelling of 1138140 in words is "one million, one hundred thirty-eight thousand, one hundred forty".