1284381 has 48 divisors (see below), whose sum is σ = 2371200. Its totient is φ = 653184.

The previous prime is 1284379. The next prime is 1284383. The reversal of 1284381 is 1834821.

1284381 is a `hidden beast` number, since 1 + 284 + 381 = 666.

It is an interprime number because it is at equal distance from previous prime (1284379) and next prime (1284383).

It is not a de Polignac number, because 1284381 - 2¹ = 1284379 is a prime.

It is a super-2 number, since 2×1284381² = 3299269106322, which contains 22 as substring.

1284381 is an undulating number in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284383) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 34695 + ... + 34731.

It is an arithmetic number, because the mean of its divisors is an integer number (49400).

2^1284381 is an apocalyptic number.

It is an amenable number.

1284381 is a deficient number, since it is larger than the sum of its proper divisors (1086819).

1284381 is a wasteful number, since it uses less digits than its factorization.

1284381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 95 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1284381 is about 1133.3053427916. The cubic root of 1284381 is about 108.7004371853.

The spelling of 1284381 in words is "one million, two hundred eighty-four thousand, three hundred eighty-one".