450021430 has 16 divisors (see below), whose sum is σ = 821448864. Its totient is φ = 177472960.

The previous prime is 450021419. The next prime is 450021511. The reversal of 450021430 is 34120054.

It is a junction number, because it is equal to n+sod(n) for n = 450021398 and 450021407.

It is a congruent number.

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, 316207 + ... + 317626.

It is an arithmetic number, because the mean of its divisors is an integer number (51340554).

Almost surely, 2^450021430 is an apocalyptic number.

450021430 is a deficient number, since it is larger than the sum of its proper divisors (371427434).

450021430 is a wasteful number, since it uses less digits than its factorization.

450021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633911.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 450021430 is about 21213.7085395270. The cubic root of 450021430 is about 766.3215966532.

Adding to 450021430 its reverse (34120054), we get a palindrome (484141484).

The spelling of 450021430 in words is "four hundred fifty million, twenty-one thousand, four hundred thirty".