42154838 has 8 divisors (see below), whose sum is σ = 68980680. Its totient is φ = 19161280.

The previous prime is 42154813. The next prime is 42154841. The reversal of 42154838 is 83845124.

42154838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 42154798 and 42154807.

It is a congruent number.

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, 958043 + ... + 958086.

It is an arithmetic number, because the mean of its divisors is an integer number (8622585).

Almost surely, 2^42154838 is an apocalyptic number.

42154838 is a deficient number, since it is larger than the sum of its proper divisors (26825842).

42154838 is a wasteful number, since it uses less digits than its factorization.

42154838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916142.

The product of its digits is 30720, while the sum is 35.

The square root of 42154838 is about 6492.6757196090. The cubic root of 42154838 is about 348.0293001709.

The spelling of 42154838 in words is "forty-two million, one hundred fifty-four thousand, eight hundred thirty-eight".