42321756 has 24 divisors (see below), whose sum is σ = 100226560. Its totient is φ = 13896432.

The previous prime is 42321749. The next prime is 42321767. The reversal of 42321756 is 65712324.

42321756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42321756² = 3582262061847072, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 25516 + ... + 27123.

Almost surely, 2^42321756 is an apocalyptic number.

It is an amenable number.

42321756 is an abundant number, since it is smaller than the sum of its proper divisors (57904804).

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

42321756 is a wasteful number, since it uses less digits than its factorization.

42321756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52713 (or 52711 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 42321756 is about 6505.5173506801. The cubic root of 42321756 is about 348.4880521652.

The spelling of 42321756 in words is "forty-two million, three hundred twenty-one thousand, seven hundred fifty-six".