1245493 has 4 divisors (see below), whose sum is σ = 1249740. Its totient is φ = 1241248.

The previous prime is 1245479. The next prime is 1245509. The reversal of 1245493 is 3945421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117649 + 1127844 = 343^2 + 1062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248493) 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, 1648 + ... + 2281.

It is an arithmetic number, because the mean of its divisors is an integer number (312435).

2^1245493 is an apocalyptic number.

It is an amenable number.

1245493 is a deficient number, since it is larger than the sum of its proper divisors (4247).

1245493 is an equidigital number, since it uses as much as digits as its factorization.

1245493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246.

The product of its digits is 4320, while the sum is 28.

The square root of 1245493 is about 1116.0165769378. The cubic root of 1245493 is about 107.5921114249.

The spelling of 1245493 in words is "one million, two hundred forty-five thousand, four hundred ninety-three".