442145313 has 6 divisors (see below), whose sum is σ = 638654354. Its totient is φ = 294763536.

The previous prime is 442145273. The next prime is 442145317. The reversal of 442145313 is 313541244.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 435473424 + 6671889 = 20868^2 + 2583^2 .

It is not a de Polignac number, because 442145313 - 2¹³ = 442137121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442145317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24563620 + ... + 24563637.

Almost surely, 2^442145313 is an apocalyptic number.

It is an amenable number.

442145313 is a deficient number, since it is larger than the sum of its proper divisors (196509041).

442145313 is a wasteful number, since it uses less digits than its factorization.

442145313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49127263 (or 49127260 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 442145313 is about 21027.2516749099. The cubic root of 442145313 is about 761.8246284580.

Adding to 442145313 its reverse (313541244), we get a palindrome (755686557).

The spelling of 442145313 in words is "four hundred forty-two million, one hundred forty-five thousand, three hundred thirteen".