1140406 has 12 divisors (see below), whose sum is σ = 1750572. Its totient is φ = 557136.

The previous prime is 1140389. The next prime is 1140413. The reversal of 1140406 is 6040411.

1140406 = T₁₃₉ + T₁₄₀ + ... + T₂₁₁.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1140406.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 10605 + ... + 10711.

It is an arithmetic number, because the mean of its divisors is an integer number (145881).

2^1140406 is an apocalyptic number.

1140406 is a deficient number, since it is larger than the sum of its proper divisors (610166).

1140406 is an equidigital number, since it uses as much as digits as its factorization.

1140406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1140406 is about 1067.8979351979. The cubic root of 1140406 is about 104.4767925388.

Adding to 1140406 its reverse (6040411), we get a palindrome (7180817).

The spelling of 1140406 in words is "one million, one hundred forty thousand, four hundred six".