42001650 has 36 divisors (see below), whose sum is σ = 112845642. Its totient is φ = 11200320.

The previous prime is 42001627. The next prime is 42001651. The reversal of 42001650 is 5610024.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 29192409 + 12809241 = 5403^2 + 3579^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42001651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 46219 + ... + 47118.

Almost surely, 2^42001650 is an apocalyptic number.

42001650 is an abundant number, since it is smaller than the sum of its proper divisors (70843992).

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

42001650 is a wasteful number, since it uses less digits than its factorization.

42001650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93355 (or 93347 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42001650 is about 6480.8679974213. The cubic root of 42001650 is about 347.6072163687.

Adding to 42001650 its reverse (5610024), we get a palindrome (47611674).

The spelling of 42001650 in words is "forty-two million, one thousand, six hundred fifty".