472138 has 4 divisors (see below), whose sum is σ = 708210. Its totient is φ = 236068.

The previous prime is 472133. The next prime is 472139. The reversal of 472138 is 831274.

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., 471969 + 169 = 687^2 + 13^2 .

It is not an unprimeable number, because it can be changed into a prime (472133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118033 + ... + 118036.

2⁴⁷²¹³⁸ is an apocalyptic number.

472138 is a deficient number, since it is larger than the sum of its proper divisors (236072).

472138 is a wasteful number, since it uses less digits than its factorization.

472138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236071.

The product of its digits is 1344, while the sum is 25.

The square root of 472138 is about 687.1229875357. The cubic root of 472138 is about 77.8675156219.

The spelling of 472138 in words is "four hundred seventy-two thousand, one hundred thirty-eight".