1281238 has 24 divisors (see below), whose sum is σ = 2309328. Its totient is φ = 522192.

The previous prime is 1281229. The next prime is 1281253. The reversal of 1281238 is 8321821.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7320 + ... + 7492.

It is an arithmetic number, because the mean of its divisors is an integer number (96222).

2^1281238 is an apocalyptic number.

1281238 is a deficient number, since it is larger than the sum of its proper divisors (1028090).

1281238 is a wasteful number, since it uses less digits than its factorization.

1281238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 205 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 1281238 is about 1131.9178415415. The cubic root of 1281238 is about 108.6116980617.

The spelling of 1281238 in words is "one million, two hundred eighty-one thousand, two hundred thirty-eight".