42508312 has 64 divisors (see below), whose sum is σ = 100247040. Its totient is φ = 16416000.

The previous prime is 42508309. The next prime is 42508327. The reversal of 42508312 is 21380524.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92788 + ... + 93244.

It is an arithmetic number, because the mean of its divisors is an integer number (1566360).

Almost surely, 2^42508312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42508312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50123520).

42508312 is an abundant number, since it is smaller than the sum of its proper divisors (57738728).

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

42508312 is a wasteful number, since it uses less digits than its factorization.

42508312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 42508312 is about 6519.8398753344. The cubic root of 42508312 is about 348.9993513999. Note that the first 3 decimals are identical.

Adding to 42508312 its reverse (21380524), we get a palindrome (63888836).

The spelling of 42508312 in words is "forty-two million, five hundred eight thousand, three hundred twelve".