42545170 has 32 divisors (see below), whose sum is σ = 80777088. Its totient is φ = 16101888.

The previous prime is 42545159. The next prime is 42545171. The reversal of 42545170 is 7154524.

It is not an unprimeable number, because it can be changed into a prime (42545171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21357 + ... + 23263.

It is an arithmetic number, because the mean of its divisors is an integer number (2524284).

Almost surely, 2^42545170 is an apocalyptic number.

42545170 is a deficient number, since it is larger than the sum of its proper divisors (38231918).

42545170 is a wasteful number, since it uses less digits than its factorization.

42545170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 42545170 is about 6522.6658660397. The cubic root of 42545170 is about 349.1001920858.

Adding to 42545170 its reverse (7154524), we get a palindrome (49699694).

The spelling of 42545170 in words is "forty-two million, five hundred forty-five thousand, one hundred seventy".