280135342 has 8 divisors (see below), whose sum is σ = 420789600. Its totient is φ = 139872144.

The previous prime is 280135301. The next prime is 280135357. The reversal of 280135342 is 243531082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 280135342.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 95967 + ... + 98842.

It is an arithmetic number, because the mean of its divisors is an integer number (52598700).

Almost surely, 2^280135342 is an apocalyptic number.

280135342 is a deficient number, since it is larger than the sum of its proper divisors (140654258).

280135342 is a wasteful number, since it uses less digits than its factorization.

280135342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195530.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 280135342 is about 16737.2441578654. The cubic root of 280135342 is about 654.3186528342.

The spelling of 280135342 in words is "two hundred eighty million, one hundred thirty-five thousand, three hundred forty-two".