450001221442 has 16 divisors (see below), whose sum is σ = 700798640760. Its totient is φ = 216457694208.

The previous prime is 450001221433. The next prime is 450001221451. The reversal of 450001221442 is 244122100054.

It is an interprime number because it is at equal distance from previous prime (450001221433) and next prime (450001221451).

It can be written as a sum of positive squares in 4 ways, for example, as 374628460761 + 75372760681 = 612069^2 + 274541^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13988703 + ... + 14020834.

Almost surely, 2^450001221442 is an apocalyptic number.

450001221442 is a deficient number, since it is larger than the sum of its proper divisors (250797419318).

450001221442 is a wasteful number, since it uses less digits than its factorization.

450001221442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28009845.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 450001221442 its reverse (244122100054), we get a palindrome (694123321496).

The spelling of 450001221442 in words is "four hundred fifty billion, one million, two hundred twenty-one thousand, four hundred forty-two".