281942 has 8 divisors (see below), whose sum is σ = 430032. Its totient is φ = 138600.

The previous prime is 281933. The next prime is 281947. The reversal of 281942 is 249182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281947) 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, 1034 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (53754).

2²⁸¹⁹⁴² is an apocalyptic number.

281942 is a deficient number, since it is larger than the sum of its proper divisors (148090).

281942 is a wasteful number, since it uses less digits than its factorization.

281942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374.

The product of its digits is 1152, while the sum is 26.

The square root of 281942 is about 530.9821089265. The cubic root of 281942 is about 65.5722257498.

The spelling of 281942 in words is "two hundred eighty-one thousand, nine hundred forty-two".