42363481 has 4 divisors (see below), whose sum is σ = 42376500. Its totient is φ = 42350464.

The previous prime is 42363469. The next prime is 42363511. The reversal of 42363481 is 18436324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 39803481 + 2560000 = 6309^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 42363481 - 2⁷ = 42363353 is a prime.

It is a super-2 number, since 2×42363481² = 3589329044874722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42363281) 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, 3165 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (10594125).

Almost surely, 2^42363481 is an apocalyptic number.

It is an amenable number.

42363481 is a deficient number, since it is larger than the sum of its proper divisors (13019).

42363481 is an equidigital number, since it uses as much as digits as its factorization.

42363481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13018.

The product of its digits is 13824, while the sum is 31.

The square root of 42363481 is about 6508.7234539501. The cubic root of 42363481 is about 348.6025392866.

The spelling of 42363481 in words is "forty-two million, three hundred sixty-three thousand, four hundred eighty-one".