42407173 has 4 divisors (see below), whose sum is σ = 42827148. Its totient is φ = 41987200.

The previous prime is 42407171. The next prime is 42407191. The reversal of 42407173 is 37170424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38155329 + 4251844 = 6177^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 42407173 - 2¹ = 42407171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42407171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209836 + ... + 210037.

It is an arithmetic number, because the mean of its divisors is an integer number (10706787).

Almost surely, 2^42407173 is an apocalyptic number.

It is an amenable number.

42407173 is a deficient number, since it is larger than the sum of its proper divisors (419975).

42407173 is a wasteful number, since it uses less digits than its factorization.

42407173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419974.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 42407173 is about 6512.0790075060. The cubic root of 42407173 is about 348.7223430147.

Adding to 42407173 its reverse (37170424), we get a palindrome (79577597).

The spelling of 42407173 in words is "forty-two million, four hundred seven thousand, one hundred seventy-three".