42362381 has 4 divisors (see below), whose sum is σ = 44592000. Its totient is φ = 40132764.

The previous prime is 42362377. The next prime is 42362431. The reversal of 42362381 is 18326324.

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 42362381 - 2² = 42362377 is a prime.

It is a super-2 number, since 2×42362381² = 3589142647978322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42362321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114781 + ... + 1114818.

It is an arithmetic number, because the mean of its divisors is an integer number (11148000).

Almost surely, 2^42362381 is an apocalyptic number.

It is an amenable number.

42362381 is a deficient number, since it is larger than the sum of its proper divisors (2229619).

42362381 is a wasteful number, since it uses less digits than its factorization.

42362381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229618.

The product of its digits is 6912, while the sum is 29.

The square root of 42362381 is about 6508.6389514245. The cubic root of 42362381 is about 348.5995220171.

The spelling of 42362381 in words is "forty-two million, three hundred sixty-two thousand, three hundred eighty-one".