1140890 has 8 divisors (see below), whose sum is σ = 2053620. Its totient is φ = 456352.

The previous prime is 1140871. The next prime is 1140901. The reversal of 1140890 is 980411.

It can be written as a sum of positive squares in 2 ways, for example, as 1138489 + 2401 = 1067^2 + 49^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57035 + ... + 57054.

2^1140890 is an apocalyptic number.

1140890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1140890 is a deficient number, since it is larger than the sum of its proper divisors (912730).

1140890 is a wasteful number, since it uses less digits than its factorization.

1140890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114096.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1140890 is about 1068.1245245757. The cubic root of 1140890 is about 104.4915707890.

It can be divided in two parts, 1140 and 890, that multiplied together give a triangular number (1014600 = T₁₄₂₄).

The spelling of 1140890 in words is "one million, one hundred forty thousand, eight hundred ninety".