42099750 has 256 divisors, whose sum is σ = 147363840. Its totient is φ = 8748000.

The previous prime is 42099737. The next prime is 42099773. The reversal of 42099750 is 5799024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3827245 + ... + 3827255.

It is an arithmetic number, because the mean of its divisors is an integer number (575640).

Almost surely, 2^42099750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42099750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73681920).

42099750 is an abundant number, since it is smaller than the sum of its proper divisors (105264090).

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

42099750 is an equidigital number, since it uses as much as digits as its factorization.

42099750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 42099750 is about 6488.4320139769. The cubic root of 42099750 is about 347.8776323632.

It can be divided in two parts, 42099 and 750, that added together give a square (42849 = 207²).

The spelling of 42099750 in words is "forty-two million, ninety-nine thousand, seven hundred fifty".