470138 has 4 divisors (see below), whose sum is σ = 705210. Its totient is φ = 235068.

The previous prime is 470131. The next prime is 470149. The reversal of 470138 is 831074.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 418609 + 51529 = 647^2 + 227^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 470138.

It is not an unprimeable number, because it can be changed into a prime (470131) by changing a digit.

470138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 117533 + ... + 117536.

2⁴⁷⁰¹³⁸ is an apocalyptic number.

470138 is a deficient number, since it is larger than the sum of its proper divisors (235072).

470138 is a wasteful number, since it uses less digits than its factorization.

470138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235071.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 470138 is about 685.6660994974. Note that the first 3 decimals coincide. The cubic root of 470138 is about 77.7574097838.

The spelling of 470138 in words is "four hundred seventy thousand, one hundred thirty-eight".