442302453 has 12 divisors (see below), whose sum is σ = 644536620. Its totient is φ = 292258176.

The previous prime is 442302439. The next prime is 442302457. The reversal of 442302453 is 354203244.

It can be written as a sum of positive squares in 2 ways, for example, as 132296004 + 310006449 = 11502^2 + 17607^2 .

It is not a de Polignac number, because 442302453 - 2¹² = 442298357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442302457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216438 + ... + 218471.

It is an arithmetic number, because the mean of its divisors is an integer number (53711385).

Almost surely, 2^442302453 is an apocalyptic number.

It is an amenable number.

442302453 is a deficient number, since it is larger than the sum of its proper divisors (202234167).

442302453 is a wasteful number, since it uses less digits than its factorization.

442302453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435028 (or 435025 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 442302453 is about 21030.9879225870. The cubic root of 442302453 is about 761.9148694860.

Adding to 442302453 its reverse (354203244), we get a palindrome (796505697).

The spelling of 442302453 in words is "four hundred forty-two million, three hundred two thousand, four hundred fifty-three".