42520426 has 8 divisors (see below), whose sum is σ = 68686884. Its totient is φ = 19624800.

The previous prime is 42520397. The next prime is 42520433. The reversal of 42520426 is 62402524.

42520426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41796225 + 724201 = 6465^2 + 851^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 42520426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817675 + ... + 817726.

Almost surely, 2^42520426 is an apocalyptic number.

42520426 is a deficient number, since it is larger than the sum of its proper divisors (26166458).

42520426 is a wasteful number, since it uses less digits than its factorization.

42520426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635416.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42520426 is about 6520.7688197022. The cubic root of 42520426 is about 349.0325008115.

The spelling of 42520426 in words is "forty-two million, five hundred twenty thousand, four hundred twenty-six".