450445042 has 4 divisors (see below), whose sum is σ = 675667566. Its totient is φ = 225222520.

The previous prime is 450445013. The next prime is 450445043. The reversal of 450445042 is 240544054.

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., 447280201 + 3164841 = 21149^2 + 1779^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 450445042.

It is not an unprimeable number, because it can be changed into a prime (450445043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112611259 + ... + 112611262.

Almost surely, 2^450445042 is an apocalyptic number.

450445042 is a deficient number, since it is larger than the sum of its proper divisors (225222524).

450445042 is a wasteful number, since it uses less digits than its factorization.

450445042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225222523.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 450445042 is about 21223.6905838735. The cubic root of 450445042 is about 766.5619712948.

Adding to 450445042 its reverse (240544054), we get a palindrome (690989096).

It can be divided in two parts, 45044 and 5042, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 450445042 in words is "four hundred fifty million, four hundred forty-five thousand, forty-two".