1245945 has 8 divisors (see below), whose sum is σ = 1993536. Its totient is φ = 664496.

The previous prime is 1245943. The next prime is 1245953. The reversal of 1245945 is 5495421.

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 1245945 - 2¹ = 1245943 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1245943) 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, 41517 + ... + 41546.

It is an arithmetic number, because the mean of its divisors is an integer number (249192).

2^1245945 is an apocalyptic number.

1245945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245945 is a deficient number, since it is larger than the sum of its proper divisors (747591).

1245945 is an equidigital number, since it uses as much as digits as its factorization.

1245945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83071.

The product of its digits is 7200, while the sum is 30.

The square root of 1245945 is about 1116.2190645209. The cubic root of 1245945 is about 107.6051252148.

The spelling of 1245945 in words is "one million, two hundred forty-five thousand, nine hundred forty-five".