42629938 has 8 divisors (see below), whose sum is σ = 68863788. Its totient is φ = 19675344.

The previous prime is 42629921. The next prime is 42629941. The reversal of 42629938 is 83992624.

42629938 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 39400729 + 3229209 = 6277^2 + 1797^2 .

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

It is a super-2 number, since 2×42629938² = 3634623227767688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42629894 and 42629903.

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, 819781 + ... + 819832.

Almost surely, 2^42629938 is an apocalyptic number.

42629938 is a deficient number, since it is larger than the sum of its proper divisors (26233850).

42629938 is a wasteful number, since it uses less digits than its factorization.

42629938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639628.

The product of its digits is 186624, while the sum is 43.

The square root of 42629938 is about 6529.1605892335. The cubic root of 42629938 is about 349.3318900921.

The spelling of 42629938 in words is "forty-two million, six hundred twenty-nine thousand, nine hundred thirty-eight".