1298641 has 2 divisors, whose sum is σ = 1298642. Its totient is φ = 1298640.

The previous prime is 1298617. The next prime is 1298651. The reversal of 1298641 is 1468921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863041 + 435600 = 929^2 + 660^2 .

It is an emirp because it is prime and its reverse (1468921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298641 - 2¹¹ = 1296593 is a prime.

1298641 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1298611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649320 + 649321.

It is an arithmetic number, because the mean of its divisors is an integer number (649321).

2^1298641 is an apocalyptic number.

It is an amenable number.

1298641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298641 is an equidigital number, since it uses as much as digits as its factorization.

1298641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 1298641 is about 1139.5793083415. The cubic root of 1298641 is about 109.1012442018.

The spelling of 1298641 in words is "one million, two hundred ninety-eight thousand, six hundred forty-one".