450021342 has 8 divisors (see below), whose sum is σ = 900042696. Its totient is φ = 150007112.

The previous prime is 450021329. The next prime is 450021347. The reversal of 450021342 is 243120054.

It is a sphenic number, since it is the product of 3 distinct primes.

450021342 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450021347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37501773 + ... + 37501784.

It is an arithmetic number, because the mean of its divisors is an integer number (112505337).

Almost surely, 2^450021342 is an apocalyptic number.

450021342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

450021342 is a wasteful number, since it uses less digits than its factorization.

450021342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75003562.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 450021342 is about 21213.7064653964. The cubic root of 450021342 is about 766.3215467027.

Adding to 450021342 its reverse (243120054), we get a palindrome (693141396).

The spelling of 450021342 in words is "four hundred fifty million, twenty-one thousand, three hundred forty-two".