220542842 has 24 divisors (see below), whose sum is σ = 376014996. Its totient is φ = 96427584.

The previous prime is 220542787. The next prime is 220542859. The reversal of 220542842 is 248245022.

It can be written as a sum of positive squares in 2 ways, for example, as 220195921 + 346921 = 14839^2 + 589^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2363 + ... + 21134.

Almost surely, 2^220542842 is an apocalyptic number.

220542842 is a deficient number, since it is larger than the sum of its proper divisors (155472154).

220542842 is a wasteful number, since it uses less digits than its factorization.

220542842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550 (or 23531 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 220542842 is about 14850.6849000307. The cubic root of 220542842 is about 604.1771862224.

Adding to 220542842 its reverse (248245022), we get a palindrome (468787864).

The spelling of 220542842 in words is "two hundred twenty million, five hundred forty-two thousand, eight hundred forty-two".