450021132 has 36 divisors (see below), whose sum is σ = 1240968456. Its totient is φ = 136369920.

The previous prime is 450021119. The next prime is 450021133. The reversal of 450021132 is 231120054.

450021132 is a `hidden beast` number, since 450 + 0 + 211 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×450021132² = 405038038493122848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (450021133) 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, 567813 + ... + 568604.

It is an arithmetic number, because the mean of its divisors is an integer number (34471346).

Almost surely, 2^450021132 is an apocalyptic number.

It is an amenable number.

450021132 is an abundant number, since it is smaller than the sum of its proper divisors (790947324).

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

450021132 is a wasteful number, since it uses less digits than its factorization.

450021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136438 (or 1136433 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 450021132 is about 21213.7015157657. The cubic root of 450021132 is about 766.3214275028.

Adding to 450021132 its reverse (231120054), we get a palindrome (681141186).

The spelling of 450021132 in words is "four hundred fifty million, twenty-one thousand, one hundred thirty-two".