281482542 has 96 divisors (see below), whose sum is σ = 694287360. Its totient is φ = 82328400.

The previous prime is 281482541. The next prime is 281482561. The reversal of 281482542 is 245284182.

281482542 is a `hidden beast` number, since 28 + 14 + 82 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 281482497 and 281482506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281482541) 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 47 ways as a sum of consecutive naturals, for example, 742509 + ... + 742887.

It is an arithmetic number, because the mean of its divisors is an integer number (7232160).

Almost surely, 2^281482542 is an apocalyptic number.

281482542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 281482542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347143680).

281482542 is an abundant number, since it is smaller than the sum of its proper divisors (412804818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281482542 is a wasteful number, since it uses less digits than its factorization.

281482542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 426 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 281482542 is about 16777.4414616770. The cubic root of 281482542 is about 655.3658713847.

The spelling of 281482542 in words is "two hundred eighty-one million, four hundred eighty-two thousand, five hundred forty-two".