42388426 has 4 divisors (see below), whose sum is σ = 63582642. Its totient is φ = 21194212.

The previous prime is 42388403. The next prime is 42388457. The reversal of 42388426 is 62488324.

42388426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42185025 + 203401 = 6495^2 + 451^2 .

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 as a sum of consecutive naturals, namely, 10597105 + ... + 10597108.

Almost surely, 2^42388426 is an apocalyptic number.

42388426 is a deficient number, since it is larger than the sum of its proper divisors (21194216).

42388426 is a wasteful number, since it uses less digits than its factorization.

42388426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21194215.

The product of its digits is 73728, while the sum is 37.

The square root of 42388426 is about 6510.6394463217. The cubic root of 42388426 is about 348.6709487113.

The spelling of 42388426 in words is "forty-two million, three hundred eighty-eight thousand, four hundred twenty-six".