42381588 has 48 divisors (see below), whose sum is σ = 103864320. Its totient is φ = 13432800.

The previous prime is 42381569. The next prime is 42381589. The reversal of 42381588 is 88518324.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42381589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20983 + ... + 22913.

It is an arithmetic number, because the mean of its divisors is an integer number (2163840).

Almost surely, 2^42381588 is an apocalyptic number.

It is an amenable number.

42381588 is an abundant number, since it is smaller than the sum of its proper divisors (61482732).

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

42381588 is a wasteful number, since it uses less digits than its factorization.

42381588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2026 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 42381588 is about 6510.1142847111. The cubic root of 42381588 is about 348.6521987805.

The spelling of 42381588 in words is "forty-two million, three hundred eighty-one thousand, five hundred eighty-eight".