42381036 has 48 divisors (see below), whose sum is σ = 111444480. Its totient is φ = 13925520.

The previous prime is 42381029. The next prime is 42381041. The reversal of 42381036 is 63018324.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 10431.

It is an arithmetic number, because the mean of its divisors is an integer number (2321760).

Almost surely, 2^42381036 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 42381036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55722240).

42381036 is an abundant number, since it is smaller than the sum of its proper divisors (69063444).

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

42381036 is a wasteful number, since it uses less digits than its factorization.

42381036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611 (or 5603 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42381036 is about 6510.0718890040. The cubic root of 42381036 is about 348.6506850977.

The spelling of 42381036 in words is "forty-two million, three hundred eighty-one thousand, thirty-six".