1245973 has 2 divisors, whose sum is σ = 1245974. Its totient is φ = 1245972.

The previous prime is 1245971. The next prime is 1246013. The reversal of 1245973 is 3795421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806404 + 439569 = 898^2 + 663^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245973 - 2¹ = 1245971 is a prime.

Together with 1245971, it forms a pair of twin primes.

1245973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622986 + 622987.

It is an arithmetic number, because the mean of its divisors is an integer number (622987).

2^1245973 is an apocalyptic number.

It is an amenable number.

1245973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245973 is an equidigital number, since it uses as much as digits as its factorization.

1245973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 1245973 is about 1116.2316067914. The cubic root of 1245973 is about 107.6059312752.

The spelling of 1245973 in words is "one million, two hundred forty-five thousand, nine hundred seventy-three".