1245961 has 2 divisors, whose sum is σ = 1245962. Its totient is φ = 1245960.

The previous prime is 1245953. The next prime is 1245971. The reversal of 1245961 is 1695421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089936 + 156025 = 1044^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245961 - 2³ = 1245953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1245971) 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 as a sum of consecutive naturals, namely, 622980 + 622981.

It is an arithmetic number, because the mean of its divisors is an integer number (622981).

2^1245961 is an apocalyptic number.

It is an amenable number.

1245961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245961 is an equidigital number, since it uses as much as digits as its factorization.

1245961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 1245961 is about 1116.2262315499. The cubic root of 1245961 is about 107.6055858222.

The spelling of 1245961 in words is "one million, two hundred forty-five thousand, nine hundred sixty-one".