42942438 has 48 divisors (see below), whose sum is σ = 116004096. Its totient is φ = 11153520.

The previous prime is 42942407. The next prime is 42942439. The reversal of 42942438 is 83424924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42942439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14106 + ... + 16877.

It is an arithmetic number, because the mean of its divisors is an integer number (2416752).

Almost surely, 2^42942438 is an apocalyptic number.

42942438 is an abundant number, since it is smaller than the sum of its proper divisors (73061658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42942438 is a wasteful number, since it uses less digits than its factorization.

42942438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31009 (or 31006 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 42942438 is about 6553.0479931098. The cubic root of 42942438 is about 350.1834086345.

The spelling of 42942438 in words is "forty-two million, nine hundred forty-two thousand, four hundred thirty-eight".