42371920 has 20 divisors (see below), whose sum is σ = 98514900. Its totient is φ = 16948736.

The previous prime is 42371873. The next prime is 42371941. The reversal of 42371920 is 2917324.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 34951744 = 2724^2 + 5912^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264745 + ... + 264904.

It is an arithmetic number, because the mean of its divisors is an integer number (4925745).

Almost surely, 2^42371920 is an apocalyptic number.

42371920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42371920 is an abundant number, since it is smaller than the sum of its proper divisors (56142980).

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

42371920 is a wasteful number, since it uses less digits than its factorization.

42371920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529662 (or 529656 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 42371920 is about 6509.3717054720. The cubic root of 42371920 is about 348.6256854921.

The spelling of 42371920 in words is "forty-two million, three hundred seventy-one thousand, nine hundred twenty".