1245207 has 4 divisors (see below), whose sum is σ = 1660280. Its totient is φ = 830136.

The previous prime is 1245191. The next prime is 1245217. The reversal of 1245207 is 7025421.

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

It is not a de Polignac number, because 1245207 - 2⁴ = 1245191 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207532 + ... + 207537.

It is an arithmetic number, because the mean of its divisors is an integer number (415070).

2^1245207 is an apocalyptic number.

1245207 is a deficient number, since it is larger than the sum of its proper divisors (415073).

1245207 is an equidigital number, since it uses as much as digits as its factorization.

1245207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415072.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1245207 is about 1115.8884352837. Note that the first 3 decimals coincide. The cubic root of 1245207 is about 107.5838754093.

The spelling of 1245207 in words is "one million, two hundred forty-five thousand, two hundred seven".