1401140 has 48 divisors (see below), whose sum is σ = 3365712. Its totient is φ = 485376.

The previous prime is 1401139. The next prime is 1401151. The reversal of 1401140 is 411041.

It can be written as a sum of positive squares in 8 ways, for example, as 204304 + 1196836 = 452^2 + 1094^2 .

It is a nialpdrome in base 11.

It is a congruent number.

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, 4262 + ... + 4578.

It is an arithmetic number, because the mean of its divisors is an integer number (70119).

2^1401140 is an apocalyptic number.

1401140 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 1401140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682856).

1401140 is an abundant number, since it is smaller than the sum of its proper divisors (1964572).

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

1401140 is a wasteful number, since it uses less digits than its factorization.

1401140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1401140 is about 1183.6975965169. The cubic root of 1401140 is about 111.8992503842.

Adding to 1401140 its reverse (411041), we get a palindrome (1812181).

Subtracting from 1401140 its reverse (411041), we obtain a palindrome (990099).

The spelling of 1401140 in words is "one million, four hundred one thousand, one hundred forty".