280942 has 8 divisors (see below), whose sum is σ = 446256.
Its totient is φ = 132192.
The previous prime is 280939. The next prime is 280949. The reversal of 280942 is 249082.
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 (280949) 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, 4098 + ... + 4165.
It is an arithmetic number, because the mean of its divisors is an integer number (55782).
2280942 is an apocalyptic number.
280942 is a deficient number, since it is larger than the sum of its proper divisors (165314).
280942 is a wasteful number, since it uses less digits than its factorization.
280942 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8282.
The product of its (nonzero) digits is 1152, while the sum is 25.
The square root of 280942 is about 530.0396211605.
The cubic root of 280942 is about 65.4946094276.
The spelling of 280942 in words is "two hundred eighty thousand, nine hundred forty-two".