1245245 has 8 divisors (see below), whose sum is σ = 1501440. Its totient is φ = 991440.

The previous prime is 1245227. The next prime is 1245281. The reversal of 1245245 is 5425421.

It is a happy number.

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

It is not a de Polignac number, because 1245245 - 2⁸ = 1244989 is a prime.

It is a super-2 number, since 2×1245245² = 3101270220050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1245245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (187680).

2^1245245 is an apocalyptic number.

It is an amenable number.

1245245 is a deficient number, since it is larger than the sum of its proper divisors (256195).

1245245 is an equidigital number, since it uses as much as digits as its factorization.

1245245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195.

The product of its digits is 1600, while the sum is 23.

The square root of 1245245 is about 1115.9054619456. The cubic root of 1245245 is about 107.5849697777.

The spelling of 1245245 in words is "one million, two hundred forty-five thousand, two hundred forty-five".