42321582 has 16 divisors (see below), whose sum is σ = 94048080. Its totient is φ = 14107176.

The previous prime is 42321581. The next prime is 42321611. The reversal of 42321582 is 28512324.

42321582 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 2×42321582² = 3582232605965448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42321581) by changing a digit.

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, 391813 + ... + 391920.

It is an arithmetic number, because the mean of its divisors is an integer number (5878005).

Almost surely, 2^42321582 is an apocalyptic number.

42321582 is an abundant number, since it is smaller than the sum of its proper divisors (51726498).

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

42321582 is a wasteful number, since it uses less digits than its factorization.

42321582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783744 (or 783738 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 42321582 is about 6505.5039774025. The cubic root of 42321582 is about 348.4875745779.

The spelling of 42321582 in words is "forty-two million, three hundred twenty-one thousand, five hundred eighty-two".