42631826 has 8 divisors (see below), whose sum is σ = 63987084. Its totient is φ = 21302800.

The previous prime is 42631817. The next prime is 42631843. The reversal of 42631826 is 62813624.

It can be written as a sum of positive squares in 2 ways, for example, as 31416025 + 11215801 = 5605^2 + 3349^2 .

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 = 42631792 and 42631801.

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, 1805 + ... + 9408.

Almost surely, 2^42631826 is an apocalyptic number.

42631826 is a deficient number, since it is larger than the sum of its proper divisors (21355258).

42631826 is a wasteful number, since it uses less digits than its factorization.

42631826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13116.

The product of its digits is 13824, while the sum is 32.

The square root of 42631826 is about 6529.3051697711. The cubic root of 42631826 is about 349.3370471007.

The spelling of 42631826 in words is "forty-two million, six hundred thirty-one thousand, eight hundred twenty-six".