445015242 has 128 divisors (see below), whose sum is σ = 1168473600. Its totient is φ = 122923008.

The previous prime is 445015231. The next prime is 445015279. The reversal of 445015242 is 242510544.

It is a super-2 number, since 2×445015242² = 396077131224637128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1943184 + ... + 1943412.

It is an arithmetic number, because the mean of its divisors is an integer number (9128700).

Almost surely, 2^445015242 is an apocalyptic number.

445015242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 445015242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (584236800).

445015242 is an abundant number, since it is smaller than the sum of its proper divisors (723458358).

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

445015242 is a wasteful number, since it uses less digits than its factorization.

445015242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 445015242 is about 21095.3843766830. The cubic root of 445015242 is about 763.4693886546.

Adding to 445015242 its reverse (242510544), we get a palindrome (687525786).

The spelling of 445015242 in words is "four hundred forty-five million, fifteen thousand, two hundred forty-two".