442131240 has 64 divisors (see below), whose sum is σ = 1404423360. Its totient is φ = 110965760.

The previous prime is 442131227. The next prime is 442131251. The reversal of 442131240 is 42131244.

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 15 ways as a sum of consecutive naturals, for example, 106326 + ... + 110405.

It is an arithmetic number, because the mean of its divisors is an integer number (21944115).

Almost surely, 2^442131240 is an apocalyptic number.

442131240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442131240 is an abundant number, since it is smaller than the sum of its proper divisors (962292120).

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

442131240 is a wasteful number, since it uses less digits than its factorization.

442131240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216762 (or 216758 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 442131240 is about 21026.9170350767. The cubic root of 442131240 is about 761.8165456916.

Adding to 442131240 its reverse (42131244), we get a palindrome (484262484).

The spelling of 442131240 in words is "four hundred forty-two million, one hundred thirty-one thousand, two hundred forty".