42672838 has 24 divisors (see below), whose sum is σ = 69780096. Its totient is φ = 19562400.

The previous prime is 42672829. The next prime is 42672859. The reversal of 42672838 is 83827624.

It is a super-2 number, since 2×42672838² = 3641942205948488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42672838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64228 + ... + 64888.

It is an arithmetic number, because the mean of its divisors is an integer number (2907504).

Almost surely, 2^42672838 is an apocalyptic number.

42672838 is a deficient number, since it is larger than the sum of its proper divisors (27107258).

42672838 is a wasteful number, since it uses less digits than its factorization.

42672838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 867 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 42672838 is about 6532.4450246443. The cubic root of 42672838 is about 349.4490324456.

The spelling of 42672838 in words is "forty-two million, six hundred seventy-two thousand, eight hundred thirty-eight".