42330381 has 4 divisors (see below), whose sum is σ = 56440512. Its totient is φ = 28220252.

The previous prime is 42330367. The next prime is 42330389. The reversal of 42330381 is 18303324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42330381 - 2⁵ = 42330349 is a prime.

It is a super-2 number, since 2×42330381² = 3583722311210322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42330389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7055061 + ... + 7055066.

It is an arithmetic number, because the mean of its divisors is an integer number (14110128).

Almost surely, 2^42330381 is an apocalyptic number.

It is an amenable number.

42330381 is a deficient number, since it is larger than the sum of its proper divisors (14110131).

42330381 is a wasteful number, since it uses less digits than its factorization.

42330381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14110130.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42330381 is about 6506.1802157641. The cubic root of 42330381 is about 348.5117240350.

The spelling of 42330381 in words is "forty-two million, three hundred thirty thousand, three hundred eighty-one".