442242650 has 12 divisors (see below), whose sum is σ = 822571422. Its totient is φ = 176897040.

The previous prime is 442242623. The next prime is 442242677. The reversal of 442242650 is 56242244.

It is an interprime number because it is at equal distance from previous prime (442242623) and next prime (442242677).

It can be written as a sum of positive squares in 3 ways, for example, as 212022721 + 230219929 = 14561^2 + 15173^2 .

It is a super-2 number, since 2×442242650² = 391157122958045000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4422377 + ... + 4422476.

Almost surely, 2^442242650 is an apocalyptic number.

442242650 is a deficient number, since it is larger than the sum of its proper divisors (380328772).

442242650 is a wasteful number, since it uses less digits than its factorization.

442242650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8844865 (or 8844860 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 442242650 is about 21029.5660915769. The cubic root of 442242650 is about 761.8805288454.

Adding to 442242650 its reverse (56242244), we get a palindrome (498484894).

The spelling of 442242650 in words is "four hundred forty-two million, two hundred forty-two thousand, six hundred fifty".