1143890 has 16 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 415920.

The previous prime is 1143887. The next prime is 1143893. The reversal of 1143890 is 983411.

It is an interprime number because it is at equal distance from previous prime (1143887) and next prime (1143893).

It is not an unprimeable number, because it can be changed into a prime (1143893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5090 + ... + 5309.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

2^1143890 is an apocalyptic number.

1143890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143890 is a deficient number, since it is larger than the sum of its proper divisors (1102510).

1143890 is a wasteful number, since it uses less digits than its factorization.

1143890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1143890 is about 1069.5279332491. The cubic root of 1143890 is about 104.5830783985.

It can be divided in two parts, 114 and 3890, that added together give a palindrome (4004).

The spelling of 1143890 in words is "one million, one hundred forty-three thousand, eight hundred ninety".