450001242 has 12 divisors (see below), whose sum is σ = 975002730. Its totient is φ = 150000408.

The previous prime is 450001231. The next prime is 450001247. The reversal of 450001242 is 242100054.

It can be written as a sum of positive squares in only one way, i.e., 294774561 + 155226681 = 17169^2 + 12459^2 .

It is a super-2 number, since 2×450001242² = 405002235603085128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 25000069 = 450001242 / (4 + 5 + 0 + 0 + 0 + 1 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (450001247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12500017 + ... + 12500052.

Almost surely, 2^450001242 is an apocalyptic number.

450001242 is an abundant number, since it is smaller than the sum of its proper divisors (525001488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450001242 is a wasteful number, since it uses less digits than its factorization.

450001242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000077 (or 25000074 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 450001242 is about 21213.2327097970. The cubic root of 450001242 is about 766.3101373976.

Adding to 450001242 its reverse (242100054), we get a palindrome (692101296).

It can be divided in two parts, 4500012 and 42, that added together give a palindrome (4500054).

The spelling of 450001242 in words is "four hundred fifty million, one thousand, two hundred forty-two".