280378042 has 16 divisors (see below), whose sum is σ = 508921920. Its totient is φ = 113093568.

The previous prime is 280378019. The next prime is 280378129. The reversal of 280378042 is 240873082.

280378042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×280378042³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 280377989 and 280378007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588792 + ... + 589267.

It is an arithmetic number, because the mean of its divisors is an integer number (31807620).

Almost surely, 2^280378042 is an apocalyptic number.

280378042 is a deficient number, since it is larger than the sum of its proper divisors (228543878).

280378042 is a wasteful number, since it uses less digits than its factorization.

280378042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178085.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 280378042 is about 16744.4928857222. The cubic root of 280378042 is about 654.5075583080.

The spelling of 280378042 in words is "two hundred eighty million, three hundred seventy-eight thousand, forty-two".