42381842 has 8 divisors (see below), whose sum is σ = 63628416. Its totient is φ = 21172372.

The previous prime is 42381839. The next prime is 42381851. The reversal of 42381842 is 24818324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42381799 and 42381808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6218 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (7953552).

Almost surely, 2^42381842 is an apocalyptic number.

42381842 is a deficient number, since it is larger than the sum of its proper divisors (21246574).

42381842 is a wasteful number, since it uses less digits than its factorization.

42381842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18552.

The product of its digits is 12288, while the sum is 32.

The square root of 42381842 is about 6510.1337927880. The cubic root of 42381842 is about 348.6528952896.

The spelling of 42381842 in words is "forty-two million, three hundred eighty-one thousand, eight hundred forty-two".