42290170 has 16 divisors (see below), whose sum is σ = 81978120. Its totient is φ = 15614784.

The previous prime is 42290167. The next prime is 42290173. The reversal of 42290170 is 7109224.

It is an interprime number because it is at equal distance from previous prime (42290167) and next prime (42290173).

It can be written as a sum of positive squares in 4 ways, for example, as 35772361 + 6517809 = 5981^2 + 2553^2 .

It is not an unprimeable number, because it can be changed into a prime (42290173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162525 + ... + 162784.

Almost surely, 2^42290170 is an apocalyptic number.

42290170 is a deficient number, since it is larger than the sum of its proper divisors (39687950).

42290170 is a wasteful number, since it uses less digits than its factorization.

42290170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325329.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 42290170 is about 6503.0892658797. The cubic root of 42290170 is about 348.4013348819.

Adding to 42290170 its reverse (7109224), we get a palindrome (49399394).

The spelling of 42290170 in words is "forty-two million, two hundred ninety thousand, one hundred seventy".