42017730 has 32 divisors (see below), whose sum is σ = 102124800. Its totient is φ = 11062272.

The previous prime is 42017707. The next prime is 42017747. The reversal of 42017730 is 3771024.

It is a self number, because there is not a number n which added to its sum of digits gives 42017730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6495 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (3191400).

Almost surely, 2^42017730 is an apocalyptic number.

42017730 is an abundant number, since it is smaller than the sum of its proper divisors (60107070).

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

42017730 is a wasteful number, since it uses less digits than its factorization.

42017730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17818.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 42017730 is about 6482.1084532735. The cubic root of 42017730 is about 347.6515702682.

Adding to 42017730 its reverse (3771024), we get a palindrome (45788754).

The spelling of 42017730 in words is "forty-two million, seventeen thousand, seven hundred thirty".