204440424442 has 4 divisors (see below), whose sum is σ = 306660636666. Its totient is φ = 102220212220.

The previous prime is 204440424373. The next prime is 204440424451. The reversal of 204440424442 is 244424044402.

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., 156395729961 + 48044694481 = 395469^2 + 219191^2 .

It is a super-2 number, since 2×204440424442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204440424398 and 204440424407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110106109 + ... + 51110106112.

Almost surely, 2^204440424442 is an apocalyptic number.

204440424442 is a deficient number, since it is larger than the sum of its proper divisors (102220212224).

204440424442 is a wasteful number, since it uses less digits than its factorization.

204440424442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102220212223.

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 204440424442 its reverse (244424044402), we get a palindrome (448864468844).

It can be divided in two parts, 20444042 and 4442, that added together give a square (20448484 = 4522²).

The spelling of 204440424442 in words is "two hundred four billion, four hundred forty million, four hundred twenty-four thousand, four hundred forty-two".