42473178 has 36 divisors (see below), whose sum is σ = 101156874. Its totient is φ = 12870000.

The previous prime is 42473177. The next prime is 42473201. The reversal of 42473178 is 87137424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 35676729 + 6796449 = 5973^2 + 2607^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42473173) 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, 7573 + ... + 11928.

Almost surely, 2^42473178 is an apocalyptic number.

42473178 is an abundant number, since it is smaller than the sum of its proper divisors (58683696).

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

42473178 is a wasteful number, since it uses less digits than its factorization.

42473178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19531 (or 19517 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 42473178 is about 6517.1449270367. The cubic root of 42473178 is about 348.9031731672.

The spelling of 42473178 in words is "forty-two million, four hundred seventy-three thousand, one hundred seventy-eight".