1243601 has 8 divisors (see below), whose sum is σ = 1327104. Its totient is φ = 1161280.

The previous prime is 1243579. The next prime is 1243609. The reversal of 1243601 is 1063421.

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

It is not a de Polignac number, because 1243601 - 2⁶ = 1243537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1243601.

It is not an unprimeable number, because it can be changed into a prime (1243609) 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, 3056 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (165888).

2^1243601 is an apocalyptic number.

It is an amenable number.

1243601 is a deficient number, since it is larger than the sum of its proper divisors (83503).

1243601 is a wasteful number, since it uses less digits than its factorization.

1243601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1243601 is about 1115.1685971188. The cubic root of 1243601 is about 107.5376035745.

1243601 divided by its sum of digits (17) gives a triangular number (73153 = T₃₈₂).

The spelling of 1243601 in words is "one million, two hundred forty-three thousand, six hundred one".