1140285 has 16 divisors (see below), whose sum is σ = 1920960. Its totient is φ = 576000.

The previous prime is 1140281. The next prime is 1140289. The reversal of 1140285 is 5820411.

It is an interprime number because it is at equal distance from previous prime (1140281) and next prime (1140289).

It is not a de Polignac number, because 1140285 - 2² = 1140281 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140281) by changing a digit.

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, 1716 + ... + 2285.

It is an arithmetic number, because the mean of its divisors is an integer number (120060).

2^1140285 is an apocalyptic number.

1140285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1140285 is a deficient number, since it is larger than the sum of its proper divisors (780675).

1140285 is a wasteful number, since it uses less digits than its factorization.

1140285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1140285 is about 1067.8412803409. The cubic root of 1140285 is about 104.4730973229.

Adding to 1140285 its reverse (5820411), we get a palindrome (6960696).

It can be divided in two parts, 1140 and 285, that multiplied together give a square (324900 = 570²).

The spelling of 1140285 in words is "one million, one hundred forty thousand, two hundred eighty-five".