1298761 has 4 divisors (see below), whose sum is σ = 1301524. Its totient is φ = 1296000.

The previous prime is 1298747. The next prime is 1298771. The reversal of 1298761 is 1678921.

It is a happy number.

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 962361 + 336400 = 981^2 + 580^2 .

It is a 4-Lehmer number, since φ(1298761) divides (1298761-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 1298761 - 2¹⁵ = 1265993 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1298761 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1298771) 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, 480 + ... + 1681.

It is an arithmetic number, because the mean of its divisors is an integer number (325381).

2^1298761 is an apocalyptic number.

It is an amenable number.

1298761 is a deficient number, since it is larger than the sum of its proper divisors (2763).

1298761 is an equidigital number, since it uses as much as digits as its factorization.

1298761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762.

The product of its digits is 6048, while the sum is 34.

The square root of 1298761 is about 1139.6319581339. The cubic root of 1298761 is about 109.1046045727.

The spelling of 1298761 in words is "one million, two hundred ninety-eight thousand, seven hundred sixty-one".