42957750 has 128 divisors (see below), whose sum is σ = 120766464. Its totient is φ = 10080000.

The previous prime is 42957683. The next prime is 42957757. The reversal of 42957750 is 5775924.

It is a junction number, because it is equal to n+sod(n) for n = 42957699 and 42957708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42957757) 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 63 ways as a sum of consecutive naturals, for example, 338187 + ... + 338313.

It is an arithmetic number, because the mean of its divisors is an integer number (943488).

Almost surely, 2^42957750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42957750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60383232).

42957750 is an abundant number, since it is smaller than the sum of its proper divisors (77808714).

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

42957750 is a wasteful number, since it uses less digits than its factorization.

42957750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 42957750 is about 6554.2162002790. The cubic root of 42957750 is about 350.2250253616.

The spelling of 42957750 in words is "forty-two million, nine hundred fifty-seven thousand, seven hundred fifty".