442268140 has 24 divisors (see below), whose sum is σ = 933633792. Its totient is φ = 175979520.

The previous prime is 442268137. The next prime is 442268161. The reversal of 442268140 is 41862244.

It is a super-2 number, since 2×442268140² = 391202215318119200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54069 + ... + 61708.

It is an arithmetic number, because the mean of its divisors is an integer number (38901408).

Almost surely, 2^442268140 is an apocalyptic number.

It is an amenable number.

442268140 is an abundant number, since it is smaller than the sum of its proper divisors (491365652).

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

442268140 is a wasteful number, since it uses less digits than its factorization.

442268140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115977 (or 115975 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 442268140 is about 21030.1721343407. The cubic root of 442268140 is about 761.8951663313.

The spelling of 442268140 in words is "four hundred forty-two million, two hundred sixty-eight thousand, one hundred forty".