1298251 has 4 divisors (see below), whose sum is σ = 1366600. Its totient is φ = 1229904.

The previous prime is 1298221. The next prime is 1298261. The reversal of 1298251 is 1528921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1528921 = 281 ⋅5441.

It is a cyclic number.

It is not a de Polignac number, because 1298251 - 2⁹ = 1297739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1298221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34146 + ... + 34183.

It is an arithmetic number, because the mean of its divisors is an integer number (341650).

2^1298251 is an apocalyptic number.

1298251 is a deficient number, since it is larger than the sum of its proper divisors (68349).

1298251 is an equidigital number, since it uses as much as digits as its factorization.

1298251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68348.

The product of its digits is 1440, while the sum is 28.

The square root of 1298251 is about 1139.4081797144. The cubic root of 1298251 is about 109.0903215667.

The spelling of 1298251 in words is "one million, two hundred ninety-eight thousand, two hundred fifty-one".