220404442042 has 4 divisors (see below), whose sum is σ = 330606663066. Its totient is φ = 110202221020.

The previous prime is 220404442019. The next prime is 220404442051. The reversal of 220404442042 is 240244404022.

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., 207299000601 + 13105441441 = 455301^2 + 114479^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220404442042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55101110509 + ... + 55101110512.

Almost surely, 2^220404442042 is an apocalyptic number.

220404442042 is a deficient number, since it is larger than the sum of its proper divisors (110202221024).

220404442042 is a wasteful number, since it uses less digits than its factorization.

220404442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110202221023.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 220404442042 its reverse (240244404022), we get a palindrome (460648846064).

The spelling of 220404442042 in words is "two hundred twenty billion, four hundred four million, four hundred forty-two thousand, forty-two".