42125850 has 144 divisors (see below), whose sum is σ = 128637600. Its totient is φ = 9797760.

The previous prime is 42125833. The next prime is 42125851. The reversal of 42125850 is 5852124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42125851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 110961 + ... + 111339.

Almost surely, 2^42125850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42125850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64318800).

42125850 is an abundant number, since it is smaller than the sum of its proper divisors (86511750).

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

42125850 is a wasteful number, since it uses less digits than its factorization.

42125850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 42125850 is about 6490.4429740966. The cubic root of 42125850 is about 347.9495071410.

Adding to 42125850 its reverse (5852124), we get a palindrome (47977974).

The spelling of 42125850 in words is "forty-two million, one hundred twenty-five thousand, eight hundred fifty".