1245859 has 4 divisors (see below), whose sum is σ = 1286080. Its totient is φ = 1205640.

The previous prime is 1245847. The next prime is 1245863. The reversal of 1245859 is 9585421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1245859 - 2¹¹ = 1243811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20064 + ... + 20125.

It is an arithmetic number, because the mean of its divisors is an integer number (321520).

2^1245859 is an apocalyptic number.

1245859 is a deficient number, since it is larger than the sum of its proper divisors (40221).

1245859 is an equidigital number, since it uses as much as digits as its factorization.

1245859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40220.

The product of its digits is 14400, while the sum is 34.

The square root of 1245859 is about 1116.1805409520. The cubic root of 1245859 is about 107.6026493822.

The spelling of 1245859 in words is "one million, two hundred forty-five thousand, eight hundred fifty-nine".