442045146 has 16 divisors (see below), whose sum is σ = 930621600. Its totient is φ = 139593168.

The previous prime is 442045133. The next prime is 442045147. The reversal of 442045146 is 641540244.

It is a happy number.

It is a super-2 number, since 2×442045146² = 390807822204322632, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442045147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938681 + ... + 1938908.

It is an arithmetic number, because the mean of its divisors is an integer number (58163850).

Almost surely, 2^442045146 is an apocalyptic number.

442045146 is an abundant number, since it is smaller than the sum of its proper divisors (488576454).

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

442045146 is a wasteful number, since it uses less digits than its factorization.

442045146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877613.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 442045146 is about 21024.8697023311. The cubic root of 442045146 is about 761.7670942427.

The spelling of 442045146 in words is "four hundred forty-two million, forty-five thousand, one hundred forty-six".