2208728020042 has 16 divisors (see below), whose sum is σ = 3320249236200. Its totient is φ = 1101979546560.

The previous prime is 2208728020003. The next prime is 2208728020049. The reversal of 2208728020042 is 2400208278022.

It is a Cunningham number, because it is equal to 1486179²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 877517424081 + 1331210595961 = 936759^2 + 1153781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2208728019983 and 2208728020010.

It is not an unprimeable number, because it can be changed into a prime (2208728020049) 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, 3177684 + ... + 3809872.

Almost surely, 2^{2208728020042} is an apocalyptic number.

2208728020042 is a deficient number, since it is larger than the sum of its proper divisors (1111521216158).

2208728020042 is a wasteful number, since it uses less digits than its factorization.

2208728020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635961.

The product of its (nonzero) digits is 57344, while the sum is 37.

The spelling of 2208728020042 in words is "two trillion, two hundred eight billion, seven hundred twenty-eight million, twenty thousand, forty-two".