1240089 has 8 divisors (see below), whose sum is σ = 1659552. Its totient is φ = 823680.

The previous prime is 1240087. The next prime is 1240097. The reversal of 1240089 is 9800421.

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

It is not a de Polignac number, because 1240089 - 2¹ = 1240087 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1240081) 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, 474 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (207444).

2^1240089 is an apocalyptic number.

It is an amenable number.

1240089 is a deficient number, since it is larger than the sum of its proper divisors (419463).

1240089 is a wasteful number, since it uses less digits than its factorization.

1240089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1240089 is about 1113.5928340287. The cubic root of 1240089 is about 107.4362773600.

The spelling of 1240089 in words is "one million, two hundred forty thousand, eighty-nine".