42532173 has 18 divisors (see below), whose sum is σ = 62134254. Its totient is φ = 28035504.

The previous prime is 42532157. The next prime is 42532177. The reversal of 42532173 is 37123524.

It can be written as a sum of positive squares in only one way, i.e., 41951529 + 580644 = 6477^2 + 762^2 .

It is not a de Polignac number, because 42532173 - 2⁴ = 42532157 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42532177) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 145015 + ... + 145307.

It is an arithmetic number, because the mean of its divisors is an integer number (3451903).

Almost surely, 2^42532173 is an apocalyptic number.

It is an amenable number.

42532173 is a deficient number, since it is larger than the sum of its proper divisors (19602081).

42532173 is a wasteful number, since it uses less digits than its factorization.

42532173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 423 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 42532173 is about 6521.6694948456. The cubic root of 42532173 is about 349.0646399319.

Adding to 42532173 its reverse (37123524), we get a palindrome (79655697).

The spelling of 42532173 in words is "forty-two million, five hundred thirty-two thousand, one hundred seventy-three".