280802042 has 4 divisors (see below), whose sum is σ = 421203066. Its totient is φ = 140401020.

The previous prime is 280802029. The next prime is 280802051. The reversal of 280802042 is 240208082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 217297081 + 63504961 = 14741^2 + 7969^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70200509 + ... + 70200512.

Almost surely, 2^280802042 is an apocalyptic number.

280802042 is a deficient number, since it is larger than the sum of its proper divisors (140401024).

280802042 is a wasteful number, since it uses less digits than its factorization.

280802042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140401023.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 280802042 is about 16757.1489818525. The cubic root of 280802042 is about 654.8373171720.

The spelling of 280802042 in words is "two hundred eighty million, eight hundred two thousand, forty-two".