42001938 has 24 divisors (see below), whose sum is σ = 99277776. Its totient is φ = 12727800.

The previous prime is 42001903. The next prime is 42001957. The reversal of 42001938 is 83910024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105868 + ... + 106263.

It is an arithmetic number, because the mean of its divisors is an integer number (4136574).

Almost surely, 2^42001938 is an apocalyptic number.

42001938 is an abundant number, since it is smaller than the sum of its proper divisors (57275838).

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

42001938 is a wasteful number, since it uses less digits than its factorization.

42001938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212150 (or 212147 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 42001938 is about 6480.8902166292. The cubic root of 42001938 is about 347.6080108664.

The spelling of 42001938 in words is "forty-two million, one thousand, nine hundred thirty-eight".