42331500 has 144 divisors (see below), whose sum is σ = 139688640. Its totient is φ = 10771200.

The previous prime is 42331489. The next prime is 42331507. The reversal of 42331500 is 513324.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42331507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103296 + ... + 103704.

It is an arithmetic number, because the mean of its divisors is an integer number (970060).

Almost surely, 2^42331500 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 42331500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69844320).

42331500 is an abundant number, since it is smaller than the sum of its proper divisors (97357140).

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

42331500 is a wasteful number, since it uses less digits than its factorization.

42331500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 42331500 is about 6506.2662103544. The cubic root of 42331500 is about 348.5147949671.

Adding to 42331500 its reverse (513324), we get a palindrome (42844824).

The spelling of 42331500 in words is "forty-two million, three hundred thirty-one thousand, five hundred".