1248641 has 2 divisors, whose sum is σ = 1248642. Its totient is φ = 1248640.

The previous prime is 1248631. The next prime is 1248671. The reversal of 1248641 is 1468421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758641 + 490000 = 871^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248641 - 2¹⁸ = 986497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1248641.

It is not a weakly prime, because it can be changed into another prime (1248631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624320 + 624321.

It is an arithmetic number, because the mean of its divisors is an integer number (624321).

2^1248641 is an apocalyptic number.

It is an amenable number.

1248641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248641 is an equidigital number, since it uses as much as digits as its factorization.

1248641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 1248641 is about 1117.4260601937. The cubic root of 1248641 is about 107.6826819890.

The spelling of 1248641 in words is "one million, two hundred forty-eight thousand, six hundred forty-one".