42118972 has 48 divisors (see below), whose sum is σ = 90881280. Its totient is φ = 16675200.

The previous prime is 42118963. The next prime is 42118997. The reversal of 42118972 is 27981124.

42118972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 20847 + ... + 22777.

It is an arithmetic number, because the mean of its divisors is an integer number (1893360).

Almost surely, 2^42118972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42118972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45440640).

42118972 is an abundant number, since it is smaller than the sum of its proper divisors (48762308).

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

42118972 is a wasteful number, since it uses less digits than its factorization.

42118972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 42118972 is about 6489.9130964906. The cubic root of 42118972 is about 347.9305692286.

The spelling of 42118972 in words is "forty-two million, one hundred eighteen thousand, nine hundred seventy-two".