42270172 has 24 divisors (see below), whose sum is σ = 85213184. Its totient is φ = 17971632.

The previous prime is 42270167. The next prime is 42270181. The reversal of 42270172 is 27107224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2388 + ... + 9499.

Almost surely, 2^42270172 is an apocalyptic number.

It is an amenable number.

42270172 is an abundant number, since it is smaller than the sum of its proper divisors (42943012).

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

42270172 is a wasteful number, since it uses less digits than its factorization.

42270172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12025 (or 12023 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 42270172 is about 6501.5515071404. The cubic root of 42270172 is about 348.3464093644.

Adding to 42270172 its reverse (27107224), we get a palindrome (69377396).

The spelling of 42270172 in words is "forty-two million, two hundred seventy thousand, one hundred seventy-two".