1298381 has 4 divisors (see below), whose sum is σ = 1483872. Its totient is φ = 1112892.

The previous prime is 1298371. The next prime is 1298387. The reversal of 1298381 is 1838921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1298381 - 2⁶ = 1298317 is a prime.

It is a super-2 number, since 2×1298381² = 3371586442322, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298387) 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, 92735 + ... + 92748.

It is an arithmetic number, because the mean of its divisors is an integer number (370968).

2^1298381 is an apocalyptic number.

It is an amenable number.

1298381 is a deficient number, since it is larger than the sum of its proper divisors (185491).

1298381 is an equidigital number, since it uses as much as digits as its factorization.

1298381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185490.

The product of its digits is 3456, while the sum is 32.

The square root of 1298381 is about 1139.4652254457. The cubic root of 1298381 is about 109.0939626881.

The spelling of 1298381 in words is "one million, two hundred ninety-eight thousand, three hundred eighty-one".