1145641 has 8 divisors (see below), whose sum is σ = 1331264. Its totient is φ = 965520.

The previous prime is 1145623. The next prime is 1145659. The reversal of 1145641 is 1465411.

It is an interprime number because it is at equal distance from previous prime (1145623) and next prime (1145659).

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

It is a cyclic number.

It is not a de Polignac number, because 1145641 - 2⁹ = 1145129 is a prime.

It is an Ulam number.

1145641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1145611) 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 7 ways as a sum of consecutive naturals, for example, 915 + ... + 1768.

It is an arithmetic number, because the mean of its divisors is an integer number (166408).

2^1145641 is an apocalyptic number.

It is an amenable number.

1145641 is a deficient number, since it is larger than the sum of its proper divisors (185623).

1145641 is an equidigital number, since it uses as much as digits as its factorization.

1145641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751.

The product of its digits is 480, while the sum is 22.

The square root of 1145641 is about 1070.3462056737. The cubic root of 1145641 is about 104.6364144158.

The spelling of 1145641 in words is "one million, one hundred forty-five thousand, six hundred forty-one".