42321320 has 32 divisors (see below), whose sum is σ = 95821920. Its totient is φ = 16822080.

The previous prime is 42321319. The next prime is 42321337. The reversal of 42321320 is 2312324.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3275 + ... + 9765.

It is an arithmetic number, because the mean of its divisors is an integer number (2994435).

Almost surely, 2^42321320 is an apocalyptic number.

42321320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42321320 is an abundant number, since it is smaller than the sum of its proper divisors (53500600).

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

42321320 is a wasteful number, since it uses less digits than its factorization.

42321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665 (or 6661 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42321320 is about 6505.4838405763. The cubic root of 42321320 is about 348.4868554497.

Adding to 42321320 its reverse (2312324), we get a palindrome (44633644).

The spelling of 42321320 in words is "forty-two million, three hundred twenty-one thousand, three hundred twenty".