1378241 has 12 divisors (see below), whose sum is σ = 1547280. Its totient is φ = 1224000.

The previous prime is 1378231. The next prime is 1378249. The reversal of 1378241 is 1428731.

It is a de Polignac number, because none of the positive numbers 2^k-1378241 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378241.

It is not an unprimeable number, because it can be changed into a prime (1378249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5366 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (128940).

2^1378241 is an apocalyptic number.

It is an amenable number.

1378241 is a deficient number, since it is larger than the sum of its proper divisors (169039).

1378241 is a wasteful number, since it uses less digits than its factorization.

1378241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 287 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 1378241 is about 1173.9850936021. The cubic root of 1378241 is about 111.2863046938.

The spelling of 1378241 in words is "one million, three hundred seventy-eight thousand, two hundred forty-one".