280242442420 has 24 divisors (see below), whose sum is σ = 588682924200. Its totient is φ = 112063873152.

The previous prime is 280242442357. The next prime is 280242442421. The reversal of 280242442420 is 24244242082.

It can be written as a sum of positive squares in 4 ways, for example, as 189005823504 + 91236618916 = 434748^2 + 302054^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280242442421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999515 + ... + 2135074.

It is an arithmetic number, because the mean of its divisors is an integer number (24528455175).

Almost surely, 2^280242442420 is an apocalyptic number.

280242442420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280242442420 is an abundant number, since it is smaller than the sum of its proper divisors (308440481780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280242442420 is a wasteful number, since it uses less digits than its factorization.

280242442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137987 (or 4137985 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 34.

The spelling of 280242442420 in words is "two hundred eighty billion, two hundred forty-two million, four hundred forty-two thousand, four hundred twenty".